| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 9 | |
| #2 | Canada | 4 | |
| #3 | WIPO (World Intellectual Property Organization) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Measurement | |
| #3 | Machine tools | |
| #4 | Basic materials chemistry | |
| #5 | Materials and metallurgy | |
| #6 | Engines, pumps and turbines | |
| #7 | Mechanical elements | |
| #8 | Civil engineering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson George H | 14 |
| #2 | Johnson Lillian D | 2 |
| Publication | Filing date | Title |
|---|---|---|
| WO9722844A1 | Wrench selector | |
| US4807347A | Method and tool for rewinding a recoil starter spring | |
| US2700243A | Minnow bucket | |
| US2298485A | Tire mold | |
| US2221800A | Clutch plate | |
| US1165102A | Door-lock. | |
| US1030662A | Tool-sharpening implement. | |
| US971276A | Fire-escape. | |
| US945954A | Method of blacking heated iron. | |
| US887813A | Blacking for heated iron. | |
| CA42071A | Semaphore | |
| CA13650A | Improvements on harrows | |
| CA530387A | Minnow bucket |