Johnston; John N.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnston; John N..The latest application filed is for "instrument seal".
- Johnston; John N. - Washington NJ
- Johnston; John N. - North Plainfield NJ
| Patent | Date |
|---|---|
| Instrument seal Grant 6,036,672 - Allen , et al. March 14, 2 | 2000-03-14 |
| Tilt and swivel assembly for terminal monitor Grant 4,731,030 - Johnston March 15, 1 | 1988-03-15 |
| Calculator having a modular keyboard Grant 4,333,155 - Johnston June 1, 1 | 1982-06-01 |
| Cartridge and bezel assembly for a calculator Grant 4,323,979 - Johnston April 6, 1 | 1982-04-06 |
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