| # | Industry | |
|---|---|---|
| #1 | Measurement | |
| #2 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Measuring volume | |
| #2 | Sound-producing devices | |
| #3 | Measuring electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Marindin Henri L | 2 |
| #2 | Townsend George H | 2 |
| #3 | Miner Robert G Jr | 1 |
| #4 | Cheney Moses Edward | 1 |
| #5 | Cheney Moses E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA310890A | Aircraft indicator | |
| CA301717A | Signal horn | |
| CA306358A | Mounting for traffic warning devices | |
| CA306359A | Relief valve for ford oiling systems | |
| CA310737A | Traffic signal device | |
| CA302348A | Electrical oil and gas indicator | |
| CA332343A | Electric acoustic device |