Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9521828 | Feeder for animals selected from domestic pets, cage birds, chickens, fish and wild birds | Jeremy Oates | 2016-12-20 |
| 9295226 | Battery-powered animal feeder having improved metering | — | 2016-03-29 |
| 8839556 | Pet door systems and methods of operation thereof | David Alan Woodfield, Andrew Keatley | 2014-09-23 |
| 7765955 | Pet door | Robert Wiedemann, David Alan Woodfield | 2010-08-03 |
| 7662278 | Self-cleaning filter assembly | Robert Wiedemann, David Goodwin | 2010-02-16 |
| 6524078 | Pond pump with reversing means to prevent rotation in the opposite direction | Robert Weidemann | 2003-02-25 |
| 6453847 | Electro-magnetically controlled pet door | — | 2002-09-24 |
| 5168842 | Spark plug wiring harness assembly | — | 1992-12-08 |
| D299363 | Game board | — | 1989-01-10 |
| 4707589 | Heating apparatus | David R. May | 1987-11-17 |
| 4639579 | Heating apparatus | David R. May | 1987-01-27 |