US Patent 7681297 Duct fastseam
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Patent abstract
A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.
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Patent Inventor Names
Ashok M. Shah0
John J. Toben0
Michael C. Borwig0
Richard F. Blum0
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US Patent 07681297 Duct fastseam US Patent 7681297 Duct fastseam
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Patent Number
076812970
Patent Number
76812970
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Official Website
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Patent Jurisdiction
Patent Number
076812970
Date of Patent
March 23, 2010
0Patent Application Number
106687340
Date Filed
September 23, 2003
0Official Website
Patent Primary Examiner
Edits on 18 Jun, 2022
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US Patent 07681297 Duct fastseam
Infobox
Is a
Patent jurisdiction
Patent number
07681297
Date of patent
March 23, 2010
Patent application number
10668734
Date Filed
September 23, 2003
Patent primary examiner
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