Walmsley Patent Lamp Co
of 180 Gray's Inn Road, London, WC1.
- 1937 British Industries Fair Advert for Scientific Lighting. Daylight Lamps. Electric Lamps. Electric Lighting Equipment (Industrial). Street Lighting Apparatus (Electric). (Electricity: Industrial and Domestic Section - Stand No Cb.921) [1]
- 1937 Patent - Improvements in or relating to light diffusing devices for lighting units. [2]
- 1938 Patent - Light diffusing means for lamps. [3]
