| # | Industry | |
|---|---|---|
| #1 | Digital networks | |
| #2 | Telecommunications | |
| #3 | Control | |
| #4 | Environmental technology |
| # | Name | Total Patents |
|---|---|---|
| #1 | Vernam Gilbert Sanford | 4 |
| #2 | Smith Clyde | 2 |
| #3 | Hallden Frederick Gustave | 2 |
| #4 | Clokey Allison Andrew | 1 |
| #5 | Putman Ralph Ethan Allen | 1 |
| #6 | Fricke Jackson Clarke | 1 |
| #7 | Connery Alder Foster | 1 |
| #8 | Griffith Ronald George | 1 |
| Publication | Filing date | Title |
|---|---|---|
| DE586453C | Encryption apparatus, especially for type printers | |
| CA330543A | Telegraph system | |
| CA356611A | Stock quotation board system | |
| CA326191A | Stock quotation system | |
| CA346890A | Printing telegraph exchange system | |
| CA326192A | Stock quotation board | |
| CA327653A | Single line repeater | |
| CA315713A | Telegraph synchronizer | |
| CA324354A | Telegraph repeater system | |
| CA325163A | Submarine cable system | |
| CA326193A | Printing telegraph exchange system | |
| CA326951A | Telegraph switching system |