Nowlin; Duane D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Nowlin; Duane D..The latest application filed is for "electronic indicator faucet".
- Nowlin; Duane D. - New Brighton MN
| Patent | Date |
|---|---|
| Electronic indicator faucet Grant D309,342 - Nowlin , et al. July 17, 1 | 1990-07-17 |
| Method for regeneration of a water softener Grant 4,722,797 - Gauer , et al. February 2, 1 | 1988-02-02 |
| Chemical feed pump flow indicator Grant 4,599,047 - Nowlin , et al. July 8, 1 | 1986-07-08 |
| Chemical dispenser Grant 4,347,224 - Beckert , et al. August 31, 1 | 1982-08-31 |
| Method and apparatus for treating water Grant 4,332,685 - Nowlin , et al. June 1, 1 | 1982-06-01 |
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