IPCO CORPORATION

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
D324731 Dental pinExpiredJun 16, 89Mar 17, 92[]
4885965 Rotary saw for sectioning dental modelsExpiredAug 19, 88Dec 12, 89[A61C]
D302293 Dental rotary sawExpiredFeb 13, 87Jul 18, 89[]
4831066 Dental compositions comprising oligomer of hexahydrophtalic anhydride, glycidylmethacrylate and 2-hydroxyethyl-methacrylateExpiredAug 04, 87May 16, 89[C08J]
4817839 Rotary saw and method for sectioning dental modelsExpiredFeb 13, 87Apr 04, 89[B26D]
4774267 Dental material comprising adduct of glycidilmethacrylate and tricarboxylic acidExpiredAug 04, 87Sep 27, 88[A61K, C08F, C08K]
4758159 Adjustable mandrelExpiredOct 06, 86Jul 19, 88[A61C]
D290506 Vented dental pinExpiredMar 06, 85Jun 23, 87[]
D290507 Dental stop pinExpiredMar 06, 85Jun 23, 87[]
D290508 Dental locking pinExpiredMar 06, 85Jun 23, 87[]
D281532 Dental impression trayExpiredApr 29, 83Nov 26, 85[]
4500296 Method and apparatus for reinforcing dental anchorsExpiredJun 16, 83Feb 19, 85[A61C]
4498475 Electrosurgical unitExpiredAug 27, 82Feb 12, 85[A61B]
4496351 Infusion monitorExpiredJun 09, 83Jan 29, 85[A61M]
4431417 Variable connector for fixed and removable dental prosthesesExpiredSep 29, 82Feb 14, 84[A61C]
4393539 Overhandle for enclosing a dental tool handle or shankExpiredDec 09, 80Jul 19, 83[B25G]
4362165 Stable gel electrodeExpiredJan 08, 80Dec 07, 82[A61B]
4355979 Lingual dental splint deviceExpiredSep 18, 80Oct 26, 82[A61C]
4354840 Splinting device for anterior teethExpiredApr 07, 81Oct 19, 82[A61C]
4349335 Oval dental anchorExpiredSep 20, 79Sep 14, 82[A61C]

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