Polytronic AG

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4480313 Method of determining sound propagationExpiredDec 28, 81Oct 30, 84[G01P]
4405132 Target member simulating an object to be fired onExpiredSep 03, 81Sep 20, 83[F41J]
4361330 Target with interchangeable target imagesExpiredJan 23, 81Nov 30, 82[F41J]
4303853 Method of and apparatus for determining the impact site of a bullet upon a targetExpiredNov 20, 79Dec 01, 81[F41J, G06F]

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