Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6612301 | Water heater | — | 2003-09-02 |
| 6338319 | Water heater with flammable vapor flame arrestor and method of operation | — | 2002-01-15 |
| 6029615 | Water heater construction and fabrication method therefor | R. James Terwilliger, Gordon D. Shippy | 2000-02-29 |
| 5988116 | Low NO.sub.x gas burner and method of operation | Hector J. Donastorg, Clifford Carlton, William Michael Pryor | 1999-11-23 |
| 5913675 | Low NO.sub.x gas burner | Hector J. Donastorg, Clifford Carlton, William Michael Pryor | 1999-06-22 |
| D400971 | Gas-fired water heater | Clifford Carlton, William Michael Pryor | 1998-11-10 |
| D388868 | Electric water heater | Clifford Carlton, William Michael Pryor | 1998-01-06 |
| 5158200 | Tank connector construction and method of fabrication | Rolf E. Faber | 1992-10-27 |
| 5020512 | Water heater construction and method of heating water | Ernest Wenczl | 1991-06-04 |
| 4889105 | Water heater construction and method of manufacture | Ernest Wenczl | 1989-12-26 |
| 4838211 | Water heater construction and method of heating water | — | 1989-06-13 |
| 4791888 | Water heater tank construction | — | 1988-12-20 |
| 4250759 | Digital readout gauge | Frank S. Irlinger | 1981-02-17 |