D-J Engineering, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0199,828 Air injection engineAbandonedDec 22, 08Aug 13, 09[F02B]
7467608 Air injection engineExpiredFeb 08, 06Dec 23, 08[F02B]
7007639 Air injection engineExpiredFeb 12, 04Mar 07, 06[F02B]
6748780 Numerically controlled forming methodExpiredMar 13, 03Jun 15, 04[B21D]
6532786 Numerically controlled forming methodExpiredApr 19, 01Mar 18, 03[B21D]

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