| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 12 | |
| #2 | Canada | 2 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Mechanical elements | |
| #3 | Packaging and shipping | |
| #4 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Pumps | |
| #2 | Lubricating | |
| #3 | Transferring liquids | |
| #4 | Venting or aerating devices | |
| #5 | Rotary-pistons | |
| #6 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Prescott Le Roy A | 4 |
| #2 | Bennett Thomas B | 4 |
| #3 | Mcgregor Clarence E | 2 |
| #4 | Mcgregor Clarence Edwin | 1 |
| #5 | Jay Retsema | 1 |
| #6 | Prescott Leroy Albert | 1 |
| #7 | Weaver Clyde E | 1 |
| #8 | Prescott Le Roy R | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1945011A | Pump control | |
| US1844668A | By-pass valve for motor pumps | |
| US1764980A | Illuminating device | |
| US1988131A | Pump | |
| US1844103A | Pump | |
| US1815698A | Two sided dispensing pump | |
| US1718833A | Oil-tank bracing | |
| US1846046A | Oil pump | |
| US1709602A | Oil-pump drain pipe | |
| US1715329A | Grease dispenser | |
| US1764926A | Pneumatic grease pump | |
| US1607363A | Grease nozzle | |
| CA298818A | By-pass valve for motor pumps | |
| CA303177A | Oil tank bracing |