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3773143
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Information
Patent Grant
3773143
References
Source
Patent Number
3,773,143
Date Filed
Not available
Date Issued
Tuesday, November 20, 1973
51 years ago
CPC
E06C7/484 - Supports specially adapted for use with a wall opening
E06C7/48 - Ladder heads Supports for heads of ladders for resting against objects
US Classifications
182 - Fire escape, ladder, or scaffold
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