Callander; George C.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Callander; George C..The latest application filed is for "method of assembly of crystal filters".
- Callander; George C. - Palo Alto CA
| Patent | Date |
|---|---|
| Method of assembly of crystal filters Grant 3,916,490 - Sheahan , et al. November 4, 1 | 1975-11-04 |
| Method Of Assembly Of Crystal Filters Grant 3,832,761 - Sheahan , et al. September 3, 1 | 1974-09-03 |
| Crystal Filter Assembly Grant 3,723,920 - Sheahan , et al. March 27, 1 | 1973-03-27 |
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