| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 25 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Agriculture | |
| #4 | Thermal processes | |
| #5 | Consumer goods | |
| #6 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Steam traps | |
| #3 | Planting | |
| #4 | Garment fastenings | |
| #5 | Crop agriculture | |
| #6 | Venting or aerating devices | |
| #7 | Supplying combustion engines | |
| #8 | Steam generation | |
| #9 | Preheating for stem generation | |
| #10 | Mechanical control devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Strong Leslie P | 12 |
| #2 | Goff William S | 4 |
| #3 | Mainwaring John L | 2 |
| #4 | Clark David A | 2 |
| #5 | Clark Otho A | 2 |
| #6 | Clark Theodore W | 2 |
| #7 | Clark Byron G | 1 |
| #8 | Winter Oscar | 1 |
| #9 | Hughes Ocie D | 1 |
| #10 | Campbell Harold E | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3227226A | Fertilizer sealer having interchangeable arms | |
| US3106254A | Implement hitch for tractors | |
| US2944615A | Support and transporting structure for harrows | |
| US2826342A | Fluid metering mechanism | |
| US2658517A | Vapor trap | |
| US2637335A | Vapor trap | |
| US2550643A | Steam trap | |
| US2431057A | Blowdown device | |
| US2211880A | Inverted bucket steam trap | |
| US2179145A | Steam trap | |
| US1901200A | Steam trap | |
| US1901833A | Steam trap | |
| US1918435A | Steam trap | |
| US1896528A | Steam trap | |
| US1870660A | Steam trap | |
| US1839999A | Steam trap | |
| US1777507A | Steam trap | |
| US1697887A | Steam trap | |
| US1763486A | Valve | |
| US1036742A | Automatic engine-stop. |