HIRSCH ELECTRONICS CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5206782 Surge lock power controllerExpiredJan 18, 91Apr 27, 93[E05B]
4644326 Unitary key panelExpiredJun 03, 83Feb 17, 87[H04L]
4502048 Security meansExpiredNov 13, 81Feb 26, 85[H04Q, E05B, G06F]
4479112 Secure input systemExpiredMay 19, 82Oct 23, 84[G06F, E05B]
4333090 Secure keyboard input terminalExpiredMay 05, 80Jun 01, 82[G06F, E05B]

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