Plessey

__NOTOC__
==1917–194?==
==194?—1963==
==1963–1989==
Plessey - 1963x.svg|Script
===1965–1989===
Category:1917
Category:Defunct
Category:Electronics
Category:Electronics companies
Category:Electronics companies of the United Kingdom
Category:Defence
Category:Defunct defense companies
Category:Telecommunications
Category:Defunct telecommunications companies
Category:Telecommunications companies in the United Kingdom
Category:Defunct telecommunications companies in the United Kingdom
Category:Telecommunications companies
Category:London
Category:England
Category:United Kingdom
Category:Aircraft
Category:Defunct aircraft companies
Category:Computer
Category:Computer companies
Category:Computer hardware
Category:Defunct computer companies
Category:Siemens