Question: The creator of the Volta Laboratory and Bureau was credited with patenting what first? 

Context paragraphs:
Photophone: The photophone is a telecommunications device that allows transmission of speech on a beam of light.  It was invented jointly by Alexander Graham Bell and his assistant Charles Sumner Tainter on February 19, 1880, at Bell's laboratory at 1325 L Street in Washington, D.C. Both were later to become full associates in the Volta Laboratory Association, created and financed by Bell.

Graphophone: The Graphophone was the name and trademark of an improved version of the phonograph.  It was invented at the Volta Laboratory established by Alexander Graham Bell in Washington, D.C., United States.

St. Louis Motor Company: St. Louis Motor Carriage Company was a manufacturer of automobiles at 1211–13 North Vandeventer Avenue in St. Louis, Missouri, founded by George Preston Dorris (later credited with developing and patenting the float-carburetor) and John French in 1898, with French taking charge of marketing and Dorris heading engineering and production.  St. Louis Motor Carriage was the first of many St. Louis automakers and produced automobiles from 1899 to 1907.

Bryan Davis (inventor): Bryan Davis (born 1981 in Monterey, California) is an American inventor and distiller.  He is most noteworthy for inventing and patenting the first process documented to successfully replicate some of the effects of barrel ageing of distilled spirits in a laboratory (the Davis method).  He is the founder of Lost Spirits an award-winning distilled spirits manufacturing company which uses the technology to manufacture its products as well as license the technology to third parties.

Holt Manufacturing Company: The Holt Manufacturing Company traces its roots to the 1883 founding of Stockton Wheel Service in Stockton, California, United States.  Benjamin Holt, who was later credited with patenting the first workable crawler tractor design, incorporated the Holt Manufacturing Company in 1892.  Holt Manufacturing Company was the first company to successfully manufacture a continuous track tractor.  By the start of the 20th century, Holt Manufacturing Company was the leading manufacturer of combine harvesters in the United States and the leading California-based manufacturer of steam traction engines.

FBI Laboratory: The FBI Laboratory is a division within the United States Federal Bureau of Investigation that provides forensic analysis support services to the FBI, as well as to state and local law enforcement agencies free of charge.  The lab is located at Marine Corps Base Quantico in Quantico, Virginia.  Opening November 24, 1932, the lab was first known as the "Technical Laboratory".  It became a separate division when the "Bureau of Investigation" (BOI) was renamed as the FBI.

Electrophorus: An electrophorus or electrophore is a simple manual capacitive generator used to produce electrostatic charge via the process of electrostatic induction.  A first version of it was invented in 1762 by Swedish professor Johan Carl Wilcke, but Italian scientist Alessandro Volta improved and popularized the device in 1775, and is sometimes erroneously credited with its invention.  The word "electrophorus" was coined by Volta from the Greek ήλεκτρον ('elektron'), and ϕέρω ('phero'), meaning 'electricity bearer'.

Apiary Laboratory: The Apiary Laboratory, more often referred to as the Apiary, is a research laboratory at the University of Massachusetts Amherst.  Originally built for the study of honey bees and apiculture, today it is primarily used to study native pollinator species and the chemicals and pathogens impacting their populations.  This academic building is unique in that it is credited as being the first in the United States to be erected exclusively for the teaching of beekeeping.

Alexander Graham Bell: Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish-born scientist, inventor, engineer, and innovator who is credited with patenting the first practical telephone and founding the American Telephone and Telegraph Company (AT&T) in 1885.

Volta Laboratory and Bureau: The Volta Laboratory (also known as the "Alexander Graham Bell Laboratory", the "Bell Carriage House" and the "Bell Laboratory") and the Volta Bureau were created in Georgetown, Washington, D.C. by Alexander Graham Bell.

Supporting paragraphs: Volta Laboratory and Bureau Alexander Graham Bell
Answer: telephone