| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 13 | |
| #2 | France | 13 | |
| #3 | Switzerland | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Audio-visual technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Beck Leo L | 7 |
| #2 | Smalley Robert C | 5 |
| #3 | Neon Lights Claude | 1 |
| #4 | Spaeth Charles | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA311308A | Vacuum tube | |
| CA311309A | Vacuum tube | |
| CA290367A | Neon vacuum tube | |
| CA286132A | Vacuum tube lamp support | |
| CA355179A | Vacuum tube light | |
| CA291393A | Electrode for vacuum tubes | |
| CA290370A | Flat-side vacuum tube light | |
| CA299554A | Rotary converter | |
| CA334532A | Rotary interrupter | |
| CA328057A | Vacuum tube | |
| CA367338A | Lighting device | |
| CA290371A | Colour flasher | |
| CA284756A | Lighting system |