| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 11 | |
| #2 | Canada | 10 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Control | |
| #4 | Machine tools |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Locks | |
| #3 | Unspecified technologies | |
| #4 | Bolts for doors or windows | |
| #5 | Workshop equipment | |
| #6 | Alarm systems |
| # | Name | Total Patents |
|---|---|---|
| #1 | Schlage Walter R | 21 |
| Publication | Filing date | Title |
|---|---|---|
| US2389819A | Door lock | |
| US2410462A | Face plate | |
| US2339725A | Door lock | |
| US2366934A | Door look | |
| US2355682A | Door lock | |
| US1644403A | Combination marker gauge | |
| US1579457A | Doorlock | |
| US1610711A | Door-latch bolt | |
| US1621174A | Doorknob fastener | |
| US1021339A | Indicating push-button. | |
| US921168A | Combined lock and signal and lighting switch. | |
| CA434557A | Lock structure | |
| CA437746A | Door lock | |
| CA425268A | Door lock | |
| CA434556A | Door lock | |
| CA437745A | Door lock | |
| CA205905A | Door lock | |
| CA437743A | Door lock | |
| CA434288A | Door lock | |
| CA437744A | Door lock |