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Control device

  • US 3,201,961 A
  • Filed: 03/26/1962
  • Issued: 08/24/1965
  • Est. Priority Date: 03/26/1962
  • Status: Expired due to Term
First Claim
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1. A DOOR CONTROLLING SYSTEM COMPRISING, IN COMBINATION WITH A DOOR CONTROL MEMBER, MEANS FOR OPERATING SAID CONTROL MEMBER AUTOMATICALLY IN RESPONSE TO A PRESELECTED FINGERTIP PATTERN INCLUDING MEANS FOR SCANNING A FINGERTIP AND GENERATING A FIRST SIGNAL CORRESPONDING TO THE PATTERN THEREOF, MEANS FOR SIMULTANEOUSLY SCANNING A REFERENCE FINGER PRINT AND GENERATING A SECOND SIGNAL CORRESPONDING TO THE PATTERN THEREOF, AND MEANS RESPONSIVE TO CORRESPONDENCE OF SAID FIRST AND SECOND SIGNALS FOR ENERGIZING SAID OPERATING MEANS ONLY UPON SUBSTANTIAL IDENTITY BETWEEN SAID PATTERNS.

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