Richard Wolf Medical Instruments Corp.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5009643 Self-retaining electrically insulative trocar sleeve and trocarExpiredAug 09, 89Apr 23, 91[A61M]
4286196 Automatic dimmer cutout for arc lamp of fiber optic light sourceExpiredFeb 14, 80Aug 25, 81[G05F]
4261346 EndoscopesExpiredNov 23, 79Apr 14, 81[A61B]
4211229 Laser endoscopeExpiredDec 01, 77Jul 08, 80[A61B]

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