1939:
Philco Radio & Television Corpn Ltd
Philco Machine Tools, Jigs & Fixtures
Rec. Num. 1 of 2
Source: Flight May 4th 1939
1966:
Philco Radio & Television Corpn Ltd
Philco WDL Division Satellite Technology 1966
Rec. Num. 2 of 2
Source: Flight July 28th 1966