| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Machines | |
| #3 | Civil engineering | |
| #4 | Mechanical elements | |
| #5 | Transport |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Unspecified technologies | |
| #3 | Earth drilling | |
| #4 | Shafts | |
| #5 | Vehicle suspension arrangements | |
| #6 | Springs |
| # | Name | Total Patents |
|---|---|---|
| #1 | Porter Albert N | 17 |
| Publication | Filing date | Title |
|---|---|---|
| US2282607A | Rocker bearing | |
| US2227889A | Swing post apparatus | |
| US2261180A | Rocker bearing | |
| US2198348A | Counterbalance | |
| US2218343A | Beam hanger | |
| US2193379A | Rocking bearing for pumping units and the like | |
| US2152388A | Spring shackle | |
| US2152387A | Oilless bearing | |
| US2113281A | Straight lift pumping unit | |
| US2157628A | Pumping rig | |
| US2107499A | Stirrup bearing for pitmans | |
| US2116932A | Walking beam saddle | |
| US2107498A | Well pumping apparatus | |
| US2099942A | Spring shackle | |
| US2115872A | Straight lift pumping jack | |
| US2092181A | Straight lift rod hanger | |
| US2092180A | Beam hanger |