Kempel; John J.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kempel; John J..The latest application filed is for "door construction".
- Kempel; John J. - West Branch MI
- Kempel; John J. - Pontiac MI
| Patent | Date |
|---|---|
| Door construction Grant 6,311,454 - Kempel November 6, 2 | 2001-11-06 |
| Energy efficient garage door construction and the like Grant 4,518,026 - Otto , et al. * May 21, 1 | 1985-05-21 |
| Threshold And Sill Assembly Grant 3,762,100 - Kempel October 2, 1 | 1973-10-02 |
| Prefabricated Door And Frame Assembly Grant 3,690,037 - Kempel September 12, 1 | 1972-09-12 |
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