Datakey, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D345686 Electrical information keyExpiredFeb 05, 92Apr 05, 94[]
5073703 Apparatus for encoding electrical identification devices by means of selectively fusible linksExpiredMar 30, 90Dec 17, 91[G06K]
4752679 Receptacle deviceExpiredMar 02, 87Jun 21, 88[G06K]
D291897 Identification tagExpiredFeb 15, 85Sep 15, 87[]
4659915 Receptacle design for use with electronic key-like deviceExpiredOct 04, 85Apr 21, 87[G06K]
4620088 Receptacle design for use with electronic key-like deviceExpiredMar 02, 83Oct 28, 86[G06K]
4578573 Portable electronic information devices and method of manufactureExpiredMar 23, 83Mar 25, 86[G06K]
4549076 Orientation guide arrangement for electronic key and receptacle combinationExpiredMar 24, 83Oct 22, 85[G06K]
D279586 Identification tagExpiredFeb 28, 83Jul 09, 85[]
4522456 Electronic tag receptacle and readerExpiredJan 25, 84Jun 11, 85[H01R]
D278836 Identification tagExpiredFeb 28, 83May 14, 85[]
D274126 Electronic information keyExpiredSep 17, 82Jun 05, 84[]
4436993 Electronic keyExpiredJan 11, 82Mar 13, 84[H04Q]
4379966 Receptacle for electronic information keyExpiredJul 23, 81Apr 12, 83[G06K]
D265049 Electronic information keyExpiredMay 27, 80Jun 22, 82[D080]
4326125 Microelectronic memory key with receptacle and systems thereforExpiredJun 26, 80Apr 20, 82[H04Q, G06K]
4297569 Microelectronic memory key with receptacle and systems thereforExpiredJun 28, 79Oct 27, 81[E05B, G06K]

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