| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 40 | |
| #2 | Canada | 18 | |
| #3 | United Kingdom | 9 | |
| #4 | Germany | 3 | |
| #5 | France | 3 | |
| #6 | Switzerland | 2 | |
| #7 | Japan | 1 | |
| #8 | Sweden | 1 |
| # | Industry | |
|---|---|---|
| #1 | Control | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Furniture and games | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Coin-freed | |
| #2 | Unspecified technologies | |
| #3 | Locks | |
| #4 | Unspecified technologies | |
| #5 | Office furniture | |
| #6 | Doors and windows | |
| #7 | Household appliances | |
| #8 | Hand carts | |
| #9 | Safes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Stackhouse Wells F | 28 |
| #2 | George Hofmann | 6 |
| #3 | Wells Stackhouse | 4 |
| #4 | Barth Douglas A | 4 |
| #5 | Hofmann George | 4 |
| #6 | Stackhouse Wells | 4 |
| #7 | Davis Elmer W | 3 |
| #8 | Stackhouse Wells Foster | 3 |
| #9 | Beimel Henry L | 3 |
| #10 | Johnson Harvey L | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US3974669A | Lock | |
| US3955388A | Combination magnetic key | |
| US3948068A | Magnetic lock | |
| US3967480A | Rotary release magnetically operated lock | |
| US3938640A | Coin operated lock | |
| US3790244A | Mailbox unit | |
| US3754422A | Cylinder lock and u-shaped key and method of forming same | |
| US3613855A | Coin controlled lock for two coins | |
| US3599770A | Coin operated lock | |
| US3385414A | Coin and key operated lock mechanism | |
| GB1093600A | Coin controlled locks | |
| US3328102A | Locker cabinets | |
| US3229797A | Coin controlled lock | |
| US3228506A | Coin controlled locks | |
| GB944789A | Checking locker | |
| US3208249A | Key | |
| US3193074A | Coin controlled locks | |
| US3077970A | Coin controlled lock | |
| GB908196A | Coin controlled locker | |
| US3050169A | Checking locker |