| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 15 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Electrical machinery and energy | |
| #3 | Telecommunications |
| # | Technology | |
|---|---|---|
| #1 | Alarm systems | |
| #2 | Traffic control systems | |
| #3 | Telephonic communication | |
| #4 | Circuits for supplying electric power |
| # | Name | Total Patents |
|---|---|---|
| #1 | Beach Clarence E | 15 |
| Publication | Filing date | Title |
|---|---|---|
| US2911619A | Traffic signal controllers | |
| US2820955A | Traffic signal controllers | |
| US2533344A | Variable signal transmitting station | |
| US2498639A | Signal manifesting and/or repeating equipment common to a group of code signal originating circuits | |
| US2338706A | Signaling system | |
| US2301924A | Circuit controller for signaling means | |
| US2300402A | Signaling system | |
| US2344500A | Signaling system | |
| US1528597A | Signal system | |
| US1520394A | Signal device | |
| US1396242A | Controlling system for storage batteries | |
| US1467301A | Signaling system | |
| US1528596A | Signal system | |
| US1487194A | Signaling system | |
| US1250769A | Signaling system. |