| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 16 | |
| #2 | Canada | 6 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Agriculture | |
| #3 | Machine tools | |
| #4 | Engines, pumps and turbines | |
| #5 | Transport | |
| #6 | Packaging and shipping | |
| #7 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Crop agriculture | |
| #3 | Gearing | |
| #4 | Rotary pistons | |
| #5 | Handling thin material | |
| #6 | Railway equipment | |
| #7 | Punching metal | |
| #8 | Vehicle wheels | |
| #9 | Rotary-pistons | |
| #10 | Tools for connecting or disengaging |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnson Oliver W | 22 |
| #2 | Williams Philip S | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3873248A | Valving means for a gerotor assembly | |
| US2046516A | Ladder support | |
| US2023731A | Combustible gas analysis apparatus | |
| US1721451A | Valve lifter | |
| US1671370A | Attachment for tractors | |
| US1505201A | Tractor hitch | |
| US1517732A | Attachment for tractors | |
| US1219323A | Tractor drive-wheel and mounting for same. | |
| US1191430A | Cultivator. | |
| US1333207A | Operating mechanism for gang-plows | |
| CA158871A | Rotary plough | |
| US1145147A | Rotary plow. | |
| US1034245A | Flying-machine. | |
| US932283A | Stacker for folding-machines. | |
| CA115242A | Paper feeding mechanism | |
| CA115458A | Paper folding machine | |
| US809569A | Stamp-affixing machine. | |
| US788773A | Variable-speed gearing. | |
| US735266A | Car-replacer. | |
| CA243743A | Tractor hitch |