Conkle; Ellsworth V.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Conkle; Ellsworth V..The latest application filed is for "mine roof movement monitor".
- Conkle; Ellsworth V. - Paonia CO
| Patent | Date |
|---|---|
| Mine roof movement monitor Grant 4,156,236 - Conkle May 22, 1 | 1979-05-22 |
| Tailgate Assembly Grant 3,785,695 - Conkle January 15, 1 | 1974-01-15 |
| Roof Micrometer And Warning Instrument Grant 3,646,553 - Conkle February 29, 1 | 1972-02-29 |
| Mine Roof Gauge And Indicator Grant 3,594,773 - Conkle , et al. July 20, 1 | 1971-07-20 |
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