Question: In what year did Hans Hilfiker design the swiss railway clock with Mobatime?

Context paragraphs:
Swiss railway clock: The Swiss railway clock was designed in 1944 by Hans Hilfiker, a Swiss engineer, together with Mobatime, a clock manufacturer, for use by the Swiss Federal Railways as a station clock.  In 1953, Hilfiker added a red second hand in the shape of a railway guard's signaling disc.

Zürich Oerlikon railway station: Zürich Oerlikon railway station (German: "Bahnhof Zürich Oerlikon" ) is a railway station located at Oerlikon in the city of Zurich, Switzerland.  It is a major nodal point and junction for both the Zurich S-Bahn network and the Swiss railway network as a whole.  Trains on 11 lines of the S-Bahn serve the station, as do frequent inter-regional trains.  Inter-city passenger and freight traffic also passes through the station without stopping.  Serving approximately 85,000 daily passengers, Zurich Oerlikon is the seventh busiest railway station in Switzerland.

SBB Cargo: SBB Cargo is a subsidiary of Swiss Federal Railways (SBB) specialising in railfreight and is operated as the Freight division.  Swiss Federal Railways is a formerstate-owned and -controlled company that was transformed in 1999 into a joint-stock company under special legislation following the first Swiss railway reform and divided up into three independent divisions: Passenger, Freight and Infrastructure.  The headquarters of Swiss Federal Railways SBB Cargo AG, the Freight division's official designation, are in Olten.  Swiss Federal Railways is a formerstate-owned and -controlled company that was transformed in 1999 into a joint-stock company under special legislationreight division.  Swiss Federal Railways is a formerstate-owned and -controlled company that was transformed in 1999 into a joint-stock company under special legislation

Self Winding Clock Company: The Self Winding Clock Company (SWCC) was a major manufacturer of electromechanical clocks from 1886 until about 1970.  The Self Winding Clock Company clock mechanisms were truly revolutionary because the spring that powers the clock was not wound by hand but with an electric motor.  The SWCC of New York was one of the first companies in the United States to successfully employ electric energy to power a clock.  The winding motor is attached to, and mounted below, the conventional clock works.  The unique feature of their patented clock mechanism is the automatic rewinding of the main spring each hour by the small electric motor.  A contact switch mounted on the clock's center shaft is activated after the clock has run for one hour and the main spring is rewound one revolution.  This rewinding occurs each hour.  The power for the motor is supplied by batteries and the batteries last about one year before needing to be replaced.  This clock mechanism never needed to be wound by hand and this eliminated the concern that someone may forget to wind the clock.  Hence the company name, The Self Winding Clock Company.

Lake Line: The Lake Line (German: "Seelinie" ), as it is referred to by the SBB in English, is the Swiss railway line running from Rorschach via Romanshorn, Kreuzlingen, Steckborn and Stein am Rhein to Schaffhausen and forms the Swiss section of the ring railway around Lake Constance.

West Switzerland Company: The West Switzerland Company (French: "Compagnie de l'Ouest-Suisse" , OS) was a railway company in Switzerland, formed 1854 and absorbed into the Western Swiss Railway in 1872.  The OS built a railway network in western Switzerland and connected with France via Geneva in 1858, although Switzerland's first railway was the French Strasbourg–Basel Railway (French: "Chemin de fer de Strasbourg à Bâle"), which connected Basel with Strasbourg, France in 1844.

Clock Tower, Hong Kong: The Clock Tower is a landmark in Hong Kong.  It is located on the southern shore of Tsim Sha Tsui, Kowloon.  It is the only remnant of the original site of the former Kowloon Station on the Kowloon-Canton Railway.  Officially named Former Kowloon-Canton Railway Clock Tower (), it is usually referred to as the Tsim Sha Tsui Clock Tower () for its location.

ZUB 1xx: The ZUB 1xx system is a family of train protection systems produced by Siemens.  Its ZUB balises were deployed in the ZUB 121 train protection system in the Swiss railway network, in the ZUB 122 tilting control system in the German railway network, and in the ZUB 123 train protection system in the Danish railway network.  Some of these were adapted for other railway lines before the next generation ZUB 2xx family was introduced which is based on Eurobalises - the earlier ZUB balises are not compatible with those.

Swiss Central Railway: The Swiss Central Railway (German: "Schweizerische Centralbahn", SCB) was a Swiss railway company from 1853 to 1902.

Hans Hilfiker: Hans Hilfiker (15 September 1901 – 2 March 1993) was a Swiss engineer and designer.  In 1944, working for the Swiss Federal Railways, he designed the Swiss railway clock, which became an international icon.  The SBB clock was not Hilfiker's only contribution to modern living.  He developed the concept of the fitted kitchen and was responsible for the standard Swiss dimensions for kitchen components (55/60/90 cm).

Supporting paragraphs: Hans Hilfiker Swiss railway clock
Answer: 1944