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PHOTOGRAPHIC APPARATUS AND METHOD

  • US 3,647,441 A
  • Filed: 03/06/1969
  • Issued: 03/07/1972
  • Est. Priority Date: 03/06/1969
  • Status: Expired due to Term
First Claim
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2. Photographic apparatus as defined in claim 1 wherein said one member is a cylindrical roller and said shallow recesses comprise annular grooves in the peripheral surface of said roller.

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