Dietrich; Hagen
Patent Applications and Registrations
Patent applications and USPTO patent grants for Dietrich; Hagen.The latest application filed is for "door latch assembly with backset adjustment".
- Dietrich; Hagen - White Rock CA
- Dietrich; Hagen - St. Burnaby CA
- Dietrich; Hagen - Delta CA
| Patent | Date |
|---|---|
| Door latch assembly with backset adjustment Grant 5,562,314 - Wheatland , et al. October 8, 1 | 1996-10-08 |
| Door latch assembly with backset adjustment Grant 5,364,138 - Dietrich , et al. November 15, 1 | 1994-11-15 |
| Selective self-locking deadbolt latch Grant 4,974,884 - Dietrich December 4, 1 | 1990-12-04 |
| Backset adjustable door latch Grant 4,921,290 - Dietrich May 1, 1 | 1990-05-01 |
| Self-adjusting door strike Grant 4,892,341 - Dietrich January 9, 1 | 1990-01-09 |
| Spring/dead bolt lock assembly Grant 4,333,324 - Dietrich , et al. June 8, 1 | 1982-06-08 |
| Combination spring/dead bolt lock Grant 4,255,953 - Dietrich , et al. March 17, 1 | 1981-03-17 |
| Inner locking cylinder with captive key Grant 4,254,648 - Dietrich March 10, 1 | 1981-03-10 |
| Plastic door lock Grant 4,169,618 - Potter , et al. October 2, 1 | 1979-10-02 |
| Fire sleeve for tubular locks Grant 4,109,498 - Dietrich August 29, 1 | 1978-08-29 |
| Plastic latch bolt for door lock Grant 4,109,948 - Potter , et al. August 29, 1 | 1978-08-29 |
| Disengaging spindle locking mechanism Grant 4,108,482 - Dietrich , et al. August 22, 1 | 1978-08-22 |
| Knob attachment for door latch Grant 4,062,579 - Potter , et al. December 13, 1 | 1977-12-13 |
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