Programmer for contact readable electronic control system and programming method therefor
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United States of America Patent
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Sep 29, 1998
Issued Date -
N/A
app pub date -
May 31, 1996
filing date -
May 20, 1993
priority date (Note) -
Expired
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Abstract
Programmers for an entry control system employ data carriers housing ROM chips. The ROM chips are affixed with unique elemental codes. A keypad addresses the chips in one-to-one correspondence with the keys to transmit the unique elemental codes to the programmable processor of the entry control system.
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