| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 7 | |
| #2 | Canada | 2 | |
| #3 | Switzerland | 1 | |
| #4 | Germany | 1 | |
| #5 | France | 1 | |
| #6 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Unspecified technologies | |
| #3 | Making screws | |
| #4 | Making forged metal products | |
| #5 | Unspecified technologies | |
| #6 | Making metal sheets |
| # | Name | Total Patents |
|---|---|---|
| #1 | Evans Edwin R | 7 |
| #2 | Co The Detroit Bank And Trust | 2 |
| #3 | Evans Edwin Rawden | 1 |
| #4 | Company The Detroit Bank And T | 1 |
| #5 | Thread Corporation Lock | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3385340A | Lock fastener | |
| US3342234A | Self-locking screw | |
| US3353581A | Nut fastener | |
| FR1376437A | Screw | |
| GB1069648A | Improvements in or relating to self locking or self tapping screws | |
| US3247877A | Screw | |
| US2844830A | Method of radially extruding portions of a hollow blank to form external threads of wave form | |
| US2873641A | Screw with cutter to change female thread shape | |
| US2556174A | Screw-thread swaging tool | |
| CA767458A | Screw | |
| CA457896A | Stud and installation thereof |