| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 24 |
| # | Industry | |
|---|---|---|
| #1 | Electrical machinery and energy | |
| #2 | Environmental technology | |
| #3 | Measurement | |
| #4 | Machines | |
| #5 | Furniture and games |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ruhoff Otto E | 8 |
| #2 | William Balderston | 4 |
| #3 | John Graves | 4 |
| #4 | Weiss Joseph W | 2 |
| #5 | Riebeth George H | 1 |
| #6 | Tyrrell Donald W | 1 |
| #7 | Ford Joseph C | 1 |
| #8 | Ring Hans A | 1 |
| #9 | Mceachron Edgar J | 1 |
| #10 | John Craves | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1563227A | Lamp tester | |
| US1487430A | Battery | |
| US1462207A | Battery lamp | |
| US1487429A | Battery | |
| US1553877A | Electric lantern | |
| US1487428A | Battery | |
| US1487494A | Battery | |
| US1361499A | Manufacture of dry cells | |
| US1358350A | Electric battery and method of operation | |
| US1411430A | Incandescent-lamp tester | |
| US1380034A | Dry cell | |
| US1375587A | Pocket hand-lamp | |
| US1375586A | Pocket hand-lamp | |
| US1512982A | Dry-battery carrier and tester | |
| US1342068A | Electric battery | |
| US1385151A | Electric battery and method of preparing manganese material therefor | |
| US1351243A | Mixing-machine | |
| US1352087A | Electric battery | |
| US1432417A | Dry-cell construction | |
| US1377645A | Method of mixing battery material |