Caldwell Manufacturing Company

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0119,874 Snap-On Window Balance Terminal ClipAbandonedNov 12, 07May 14, 09[E05D]
2009/0094,898 Assembly of Cam-actuated Brake in Locking Shoe for Tilt SashAbandonedOct 15, 07Apr 16, 09[E05D]
2008/0235,905 Pre-Tension Anchorage for Spiral BalanceAbandonedMar 30, 07Oct 02, 08[E05D]
2008/0236,046 Tamper Proof Locking Device for Window Balance CarriersAbandonedMar 30, 07Oct 02, 08[E05D]
2008/0178,424 Locking Shoe Formed in Non-rotatable Halves for Curl Spring Window Balance SystemAbandonedJan 29, 07Jul 31, 08[E05F]
2008/0086,840 HANGER SYSTEM FOR CONNECTING WINDOW BALANCES AND CARRIERSAbandonedJul 26, 07Apr 17, 08[E05D]
2007/0101,654 Spring Wiper for Curl Spring BalancesAbandonedOct 25, 06May 10, 07[E05F]
2006/0000,058 Block and tackle window balance with integrally molded middle carriage assembly and cordAbandonedJun 21, 05Jan 05, 06[E05D]
2005/0229,492 Slotted extruded inverted carrier with improved pin ingress and egressAbandonedApr 07, 05Oct 20, 05[E05D]
5934031 Jamb liner wind braces for tilt windowExpiredMay 04, 98Aug 10, 99[E06B, E05D]
5615452 Lift-off guard guide for tilt shoeExpiredMay 05, 95Apr 01, 97[E05D]
5551189 Hurricane window braceExpiredJun 23, 94Sep 03, 96[E05D]
5546702 Adjustable brace for window sashExpiredApr 20, 95Aug 20, 96[E05D]
5260114 Thermal transfer printing of window grillesExpiredApr 12, 91Nov 09, 93[B32B, B44C]
5226919 Window grille retainerExpiredJul 17, 92Jul 13, 93[E04C]
5207025 Automatic friction shoeExpiredSep 24, 92May 04, 93[E05F]
5199219 Window jamb linerExpiredJul 22, 91Apr 06, 93[E05D]
5119592 Balance system for laterally biased sash guidesExpiredDec 20, 90Jun 09, 92[E05D]
5069001 Pivotable window sash assemblyExpiredNov 21, 90Dec 03, 91[E05D]
5012554 Automatic anchoring system for window springExpiredOct 17, 89May 07, 91[E05D, E05F]

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