Ziehm; Raymond G.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Ziehm; Raymond G..The latest application filed is for "water conservation via convective circulation".
- Ziehm; Raymond G. - Littleton CO
| Patent | Date |
|---|---|
| Water Conservation via Convective Circulation App 20180128498 - Ziehm; Raymond G. | 2018-05-10 |
| Water conservation via convective circulation Grant 9,964,315 - Ziehm May 8, 2 | 2018-05-08 |
| Hot water circulation system Grant 8,534,310 - Ziehm September 17, 2 | 2013-09-17 |
| Water Heater With Passive Automatic Hot Water Circulation Through A Home Or Building App 20100263604 - Ziehm; Raymond G. ; et al. | 2010-10-21 |
| Tankless Heater Instant Hot Water App 20100092164 - Ziehm; Raymond G. | 2010-04-15 |
| Water Heater With Passive Automatic Hot Water Circulation Through A Home Or Building App 20080006227 - Ziehm; Raymond G. ; et al. | 2008-01-10 |
| Single chamber water circulator Grant 6,161,567 - Ziehm December 19, 2 | 2000-12-19 |
| Aspirator water circulation apparatus Grant 5,518,022 - Ziehm May 21, 1 | 1996-05-21 |
| Dual mode hot water circulation apparatus Grant 5,331,996 - Ziehm July 26, 1 | 1994-07-26 |
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