| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 108 | |
| #2 | Canada | 17 | |
| #3 | France | 1 | |
| #4 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Mechanical elements | |
| #4 | Control | |
| #5 | Transport |
| # | Name | Total Patents |
|---|---|---|
| #1 | Alfred Alsaker | 35 |
| #2 | Hampton Weldon O | 16 |
| #3 | Sumpter John E | 12 |
| #4 | Cornell Elias S | 12 |
| #5 | Alsaker Alfred | 9 |
| #6 | Koerner Charles A | 8 |
| #7 | Rah Joseph C | 8 |
| #8 | Joseph Rah | 7 |
| #9 | Cole Fred H | 6 |
| #10 | Polgov Nicholas G | 6 |
| Publication | Filing date | Title |
|---|---|---|
| US2527924A | Switch construction | |
| US2527269A | Switch means | |
| US2394804A | Switch construction | |
| US2368923A | Electric expansion joint | |
| US2364071A | Terminator | |
| US2316844A | Switching device | |
| US2261843A | Switch | |
| US2231992A | Means for controlling current | |
| US2316420A | Terminator | |
| US2227925A | Swivel connection for switches, bus bars, and the like | |
| US2256734A | Contact finger for switches | |
| US2216344A | Connector | |
| US2132686A | Switching device | |
| US2109919A | Power control means | |
| US2085792A | Switch | |
| US2135250A | Metal-clad switch-gear structure | |
| US2186922A | Counting control system | |
| US2102887A | Electrical switch gear | |
| US2132685A | Contact means | |
| US2041903A | Switch operating mechanism |