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APPARATUS FOR DETERMINING DATA ASSOCIATED WITH OBJECTS

  • US 3,685,012 A
  • Filed: 04/16/1970
  • Issued: 08/15/1972
  • Est. Priority Date: 04/16/1970
  • Status: Expired due to Term
First Claim
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1. A system for determining data associated with objects comprising pattern means comprising alternating contrasting portions, means for scanning said pattern means, said pattern means being disposed with respect to said scanning means for at least partial effective obscuration from said scanning means by said objects, said pattern means not being interposed between said scanning means and said objects, said scanning means providing pulses corresponding to the scanned alternating portions of said pattern means not effectively obscured therefrom by said objects, and means for processing said pulses to determine said data.

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