| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 68 | |
| #2 | Canada | 7 | |
| #3 | United Kingdom | 7 | |
| #4 | France | 2 | |
| #5 | Germany | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Machine tools | |
| #4 | Electrical machinery and energy |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Unspecified technologies | |
| #3 | Punching metal | |
| #4 | Electrically-conductive connections | |
| #5 | Unspecified technologies | |
| #6 | Sawing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Olson Carl G | 41 |
| #2 | Hosking Richard T | 18 |
| #3 | Trotter George C | 7 |
| #4 | Gribbie John M | 5 |
| #5 | Crowther Edmond C | 1 |
| #6 | Liljeberg Carl G | 1 |
| #7 | Hosking Richard Thomas | 1 |
| #8 | Stenger Victor R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB458982A | Improvements in or relating to lock washers | |
| GB405563A | Improvements in methods of making lock washers | |
| US1909476A | Self-tapping screw | |
| GB381752A | Improvements in lock washers | |
| US1862486A | Tapping fastener | |
| US1896650A | Lock washer | |
| US1874597A | Lock washer | |
| US1924695A | Lock washer assembly | |
| US1874596A | Lock washer | |
| US1841669A | Lock washer | |
| US1915612A | Means for and method of making lock washers | |
| US1882100A | Means for and method of making lock washers | |
| US1874595A | Self-locking screw | |
| US1938399A | Lock washer | |
| US1874389A | Self-lock screw device | |
| US1940878A | Set screw | |
| US1874657A | Self-locking screw device | |
| US1901927A | Lock washer | |
| US1882089A | Lock washer | |
| US1909475A | Lock washer |