| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 4 | |
| #2 | Germany | 3 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 1 | |
| #5 | United Kingdom | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Transport | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Internal-combustion piston engines | |
| #2 | Machines | |
| #3 | Pumps | |
| #4 | Gearing | |
| #5 | Motor vehicles | |
| #6 | Vehicle suspension arrangements | |
| #7 | Unspecified technologies | |
| #8 | Special machines |
| # | Name | Total Patents |
|---|---|---|
| #1 | Hardman James A | 6 |
| #2 | A Hardman James | 2 |
| #3 | James A Hardman | 1 |
| #4 | Hardman James | 1 |
| #5 | Ross W Eskelson | 1 |
| Publication | Filing date | Title |
|---|---|---|
| GB0920287D0 | Infinite power generator | |
| US4015915A | Oil free compressor | |
| US3250931A | Piston-ported volume displacement means accommodating multiple, work effecting components | |
| US3168047A | Volume displacement means with sleeve valve control | |
| US3105700A | Three wheel-axis suspension system | |
| CA710603A | Two piston sleeve port engine | |
| CA755385A | Volume displacement means accommodating multiple, work effecting components |