| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 142 | |
| #2 | Canada | 17 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Measurement |
| # | Name | Total Patents |
|---|---|---|
| #1 | Frank William H | 76 |
| #2 | Frank Harrison J L | 37 |
| #3 | Platz Elwood T | 25 |
| #4 | Fisher Lawrence E | 19 |
| #5 | Messing Joseph A | 18 |
| #6 | Harper William A | 11 |
| #7 | Togesen Alva A | 8 |
| #8 | Joseph Messing | 7 |
| #9 | Herrmann John A | 6 |
| #10 | Harper Joseph W | 5 |
| Publication | Filing date | Title |
|---|---|---|
| US2929044A | Universal trolley duct connecting means | |
| US2820123A | Molded switch head | |
| US2643363A | Panel board neutral bar | |
| US2646488A | Circuit breaker actuator arrangement | |
| US2607868A | Circuit breaker | |
| US2607867A | Circuit breaker | |
| US2610272A | Circuit breaker | |
| US2563103A | Circuit breaker | |
| US2555035A | Circuit breaker | |
| US2511995A | Panel board | |
| US2487725A | Switch | |
| US2458583A | Protective device for use with enclosed bus bar distribution systems | |
| US2611052A | Switch | |
| US2579252A | Circuit breaker | |
| US2471837A | Circuit breaker | |
| US2503409A | Multipole switch | |
| US2428322A | Panelboard of detachably mounted switching devices | |
| US2361537A | Continuous outlet construction | |
| US2357183A | Switch | |
| US2361536A | Collector |