| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 | |
| #2 | Canada | 3 |
| # | Industry | |
|---|---|---|
| #1 | Transport | |
| #2 | Mechanical elements | |
| #3 | Agriculture | |
| #4 | Packaging and shipping | |
| #5 | Machines | |
| #6 | Materials and metallurgy | |
| #7 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Vehicle wheels | |
| #2 | Lifting and pushing | |
| #3 | Crop agriculture | |
| #4 | Pistons and sealings | |
| #5 | Casting metal | |
| #6 | Unspecified technologies | |
| #7 | Harvesting | |
| #8 | Cylinders for combustion engines | |
| #9 | Unspecified technologies | |
| #10 | Lubricating |
| # | Name | Total Patents |
|---|---|---|
| #1 | Johnston Clarence S | 20 |
| #2 | Jefferies Roy C | 1 |
| #3 | Ryan William J | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2260993A | Jack | |
| US2196263A | Friction operated bumper jack | |
| US2087761A | Expansible piston | |
| US2005373A | Expansible piston | |
| US1890511A | Expansible piston | |
| US1657719A | Demountable rim for vehicle wheels | |
| US1684398A | Disk wheel | |
| US1531008A | Vehicle wheel | |
| US1539741A | Vehicle wheel | |
| US1418576A | Oil can | |
| CA191819A | Wheel rim | |
| US1274274A | Sectional wheel-rim. | |
| US1265787A | Demountable rim. | |
| US1175956A | Wagon-tongue. | |
| US1206224A | Plow. | |
| US1180724A | Sectional wheel-rim. | |
| US1061479A | Deep-tilling attachment for plows. | |
| US914492A | Cycle. | |
| CA109086A | Hay gatherer | |
| CA205454A | Sectional wheel rim |