US Patent 7757720 Ribbed spiral pipe
Patent 7757720 was granted and assigned to Pacific Roller Die on July, 2010 by the United States Patent and Trademark Office.
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Patent abstract
Modified-profile metal strips, and annular and spiral metal pipes and other products formed from such strips. The strips comprise a plurality of spaced longitudinal ribs of size and transverse location selected to increase the strength of a given thickness or gauge of the strip and the associated strength of a product formed from the strip.
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Patent Inventor Names
Robert F. Miller0
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US Patent 07757720 Ribbed spiral pipe US Patent 7757720 Ribbed spiral pipe
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Patent Number
077577200
Patent Number
77577200
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Official Website
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
077577200
Date of Patent
July 20, 2010
0Patent Application Number
120054340
Date Filed
December 26, 2007
0Official Website
Patent Primary Examiner
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US Patent 07757720 Ribbed spiral pipe
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07757720
Date of patent
July 20, 2010
Patent application number
12005434
Date Filed
December 26, 2007
Patent primary examiner
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