Siemens Electric Lamps and Supplies
of 38-9 Upper Thames Street, London, EC4
- 1927 Selling Xcel made by ATM
- 1934 Patent x 2 - Improvements in electric discharge lamps.
- 1937 Listed Exhibitor - British Industries Fair. Electric Lamps. (Stand No. A.607)
- 1937 Electrical engineers. "Full O' Power" Batteries. "Siemens" Electric Lamps, Cables, Wires and Telephones. "Sieray" Electric Discharge Lamps.