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Patent applications and USPTO patent grants for Clark; Keith S..The latest application filed is for "programmable individualized security system for door locks".
Patent | Date |
---|---|
Programmable individualized security system for door locks Grant 5,083,122 - Clark January 21, 1 | 1992-01-21 |
Electronic access card having key pads and coils and combination using the same Grant 4,864,115 - Imran , et al. September 5, 1 | 1989-09-05 |
Electronic secure entry system, apparatus and method Grant 4,808,993 - Clark February 28, 1 | 1989-02-28 |
Electronic secure entry system, apparatus and method Grant 4,609,780 - Clark September 2, 1 | 1986-09-02 |
Solvent proportioning and mixing apparatus and system Grant 4,531,840 - Clark July 30, 1 | 1985-07-30 |
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