| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 2 | |
| #3 | Germany | 2 | |
| #4 | United Kingdom | 2 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines | |
| #3 | Measurement | |
| #4 | Electrical machinery and energy |
| # | Name | Total Patents |
|---|---|---|
| #1 | Miller Calvin K | 2 |
| #2 | Schwartz Harvey A | 2 |
| #3 | Marko Harold M | 2 |
| #4 | Kessler Charles H | 1 |
| #5 | Joseph Koch Samuel | 1 |
| #6 | Koch Samuel Joseph | 1 |
| #7 | Pohl Milton S | 1 |
| #8 | Wilson Robert J | 1 |
| #9 | Ehrlich Charles | 1 |
| #10 | Koch Samuel J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3319061A | Adjustable electric lamp | |
| GB1039270A | Multi-scale electrical measuring instrument | |
| US2890477A | Door check and hold open | |
| US2865045A | Door check and hold open | |
| GB773758A | Improvements in or relating to latches | |
| US2764441A | Door latch lock | |
| US2764440A | Door latch | |
| US2648093A | Multiple leaf concealed hinge | |
| US2674761A | Concealed hinge | |
| US2566504A | Olive knuckle butt hinge | |
| US2608713A | Friction-catch hinge | |
| US2019099A | Can opener | |
| US1650018A | Hinge | |
| CA839941A | Voltage tester | |
| CA760088A | Multi-scale electrical measuring instrument |