Duo-Fast Corporation

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5098004 Fastener driving toolExpiredDec 05, 90Mar 24, 92[B25C]
5094380 Guide for fastener driving toolExpiredOct 13, 89Mar 10, 92[B25C]
5069379 Fastener driving toolExpiredDec 08, 89Dec 03, 91[B25C]
5054678 Furniture clip/toolExpiredJul 17, 89Oct 08, 91[B25C]
5052607 Fastener driving tool with pointing deviceExpiredMar 11, 91Oct 01, 91[A41H]
5025968 Furniture toolExpiredJun 19, 89Jun 25, 91[B25C]
4911522 Core alignment system for optical fibersExpiredApr 03, 84Mar 27, 90[G02B]
4834131 Safety system for pneumatic toolsExpiredNov 10, 87May 30, 89[F16K]
4821937 Guide for fastener driving toolExpiredSep 14, 87Apr 18, 89[B27F]
4721170 Fastener driving toolExpiredSep 10, 85Jan 26, 88[B25C]
4606455 Collated fastener stripExpiredAug 17, 84Aug 19, 86[B65D]
4574991 Fastener feeding apparatusExpiredDec 31, 84Mar 11, 86[B25C, B27F]
4574992 Clinching type staplerExpiredAug 24, 84Mar 11, 86[B25C]
4523646 Fastener driving toolExpiredJul 22, 83Jun 18, 85[B25C]
4479600 Apparatus for automated frame assemblyExpiredFeb 19, 82Oct 30, 84[B27F, B42B, B42C]
4463888 Fastener driving toolExpiredApr 22, 81Aug 07, 84[B25C]
4461380 Fastener feederExpiredOct 08, 81Jul 24, 84[B65G]
D273196 Feeder housingExpiredOct 08, 81Mar 27, 84[]
4389012 Fastener tool loading assemblyExpiredApr 22, 81Jun 21, 83[B25C]
4383608 Fastener strip and strip feeding apparatusExpiredDec 03, 79May 17, 83[B65D]

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