| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 2 | |
| #2 | Australia | 1 | |
| #3 | Canada | 1 | |
| #4 | Germany | 1 | |
| #5 | Spain | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Israel | 1 | |
| #9 | Italy | 1 | |
| #10 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Agriculture | |
| #3 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Venting or aerating devices | |
| #2 | Horticulture | |
| #3 | Unspecified technologies |
| # | Name | Total Patents |
|---|---|---|
| #1 | Wilkinson Frank | 5 |
| #2 | Corliss Robert F | 3 |
| #3 | Corliss Robert Franklin | 2 |
| #4 | Corliss R | 1 |
| #5 | Wilkinson F | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4003402A | Battery operated, fluid pressure responsive valve controller | |
| CA1010744A | Battery operated, fluid pressure responsive valve controller | |
| US3921667A | Battery operated, fluid pressure responsive valve controller |