Number | Name | Date | Kind |
---|---|---|---|
1535486 | Lundy | Apr 1925 | |
1981329 | Rivier | Nov 1934 | |
4074165 | Moriyama | Feb 1978 |
Number | Date | Country |
---|---|---|
218532 | Oct 1962 | JPX |
Entry |
---|
Light & Lighting, 9-1960, p. 256, Tungsten Lamp (#4). |
Light & Lighting, 3-1962, p. 90-Airam-Wirkkala Lamp (#2). |