| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 94 | |
| #2 | Canada | 12 | |
| #3 | United Kingdom | 4 | |
| #4 | France | 3 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Machines | |
| #3 | Basic communication technologies | |
| #4 | Optics | |
| #5 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Capacitors and switching devices | |
| #2 | Unspecified technologies | |
| #3 | Unspecified technologies | |
| #4 | Cables and insulators | |
| #5 | Dynamo-electric machines | |
| #6 | Magnets and transformers | |
| #7 | Resistors | |
| #8 | Punching metal | |
| #9 | Tuning resonant circuits | |
| #10 | Cameras |
| # | Name | Total Patents |
|---|---|---|
| #1 | Preston Robinson | 33 |
| #2 | Collins Joseph L | 16 |
| #3 | Sprague Robert C | 16 |
| #4 | Godsey Jr Frank W | 11 |
| #5 | Sprague Julian K | 6 |
| #6 | Robinson Preston | 6 |
| #7 | Mccann John F | 6 |
| #8 | Max Knab | 6 |
| #9 | Desmond Sprague Frank | 5 |
| #10 | Carleton Shugg | 4 |
| Publication | Filing date | Title |
|---|---|---|
| US2417046A | Synthesis of alkylated pyrrole compounds | |
| US2473985A | Electrical conductor | |
| US2377630A | Stabilized dielectric composition | |
| US2332255A | Electrical resistor | |
| US2350823A | Electrical condenser | |
| US2350822A | Electrically insulated element | |
| US2253026A | Electrical condenser | |
| US2277968A | Electrical condenser | |
| US2299271A | Electrical condenser | |
| US2330047A | Variable tuning mechanism | |
| US2324178A | Electrical condenser | |
| US2317642A | Electrical capacitor | |
| US2290947A | Electrical condenser | |
| US2217383A | Electrical condenser | |
| US2208708A | Spark plug | |
| US2241141A | Winding machine | |
| US2251995A | Electrical device | |
| US2183776A | Electrolytic device | |
| US2201725A | Electrical device | |
| US2201761A | Electrolytic device |