| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | Canada | 6 | |
| #3 | United Kingdom | 5 | |
| #4 | Italy | 5 | |
| #5 | Germany | 3 | |
| #6 | France | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Engines, pumps and turbines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Unspecified technologies | |
| #3 | Pumps | |
| #4 | Pistons and sealings | |
| #5 | Pipes | |
| #6 | Gearing |
| # | Name | Total Patents |
|---|---|---|
| #1 | Graham Donald E | 6 |
| #2 | Battaglia Larry A | 5 |
| #3 | Buck Frank Eugene | 4 |
| #4 | Tricini John D | 3 |
| #5 | Flynn Jac B | 3 |
| #6 | Priese Werner K | 3 |
| #7 | Graham D | 3 |
| #8 | Battaglia L | 2 |
| #9 | Heller Kenneth G | 2 |
| #10 | Burger Harry Fred | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US4693451A | Valve structures | |
| CA996814A | Metering pump | |
| US3910727A | Metering pump | |
| US3870071A | Swing check seal assembly | |
| US3869108A | Welded valve body construction | |
| US3868867A | Differential harmonic drive | |
| US3875963A | Swing check valve | |
| US3897804A | Swing check valve | |
| US3857546A | Ball valve with filament wound body |