发明授权
US3970824A Electronic recognition and identification system for identifying a family of codes 失效
用于识别一系列代码的电子识别和识别系统

Electronic recognition and identification system for identifying a
family of codes
摘要:
An electronic recognition and identification system for recognizing and identifying any one of a family of electrically-coded external objects. The system comprises internal electronics including a pulse widening circuit which enables the system to be responsive to each of the codes of the family of external objects.
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