| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 17 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Engines, pumps and turbines | |
| #3 | Machine tools | |
| #4 | Mechanical elements | |
| #5 | Control |
| # | Technology | |
|---|---|---|
| #1 | Unspecified technologies | |
| #2 | Presses | |
| #3 | Pumps | |
| #4 | Venting or aerating devices | |
| #5 | Servomotors | |
| #6 | Non-positive-displacement pumps | |
| #7 | Shafts | |
| #8 | Rotary-pistons | |
| #9 | Grinding or polishing devices | |
| #10 | Systems controlling non-electric variables |
| # | Name | Total Patents |
|---|---|---|
| #1 | Maurice Towler John | 17 |
| #2 | Hathorn Towler Frank | 14 |
| #3 | Hathorn Towier Frank | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US2475413A | Hydraulic system for unloading large capacity pumps | |
| US2475414A | Hydraulic system for unloading large capacity pumps | |
| US2590137A | Antisurge control and exhaust valve for hydraulic apparatus | |
| US2509177A | Self-aligning journal bearing | |
| US2370760A | Reciprocating ram pump | |
| US2361801A | Hydraulic piston valve | |
| US2362864A | Control valve for hydraulic presses | |
| US2303590A | Pump relief valve | |
| US2286027A | Hydraulic reducing valve | |
| US2286026A | Hydraulic valve | |
| US2263657A | Reciprocating ram pump | |
| US2247261A | Unloading valve for reciprocating ram pumps | |
| US2243585A | Rotary self-cleaning strainer | |
| US2218928A | Reciprocating ram pump | |
| US2218927A | Reciprocating ram pump | |
| US2168850A | Reciprocating ram pump | |
| US1966421A | Hydraulic system |