US Patent 8739482 Firestopping apparatus with airflow-blocking elements
Patent 8739482 was granted and assigned to 3M on June, 2014 by the United States Patent and Trademark Office.
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Patent abstract
A firestopping apparatus including a sleeve with at least first and second airflow-blocking elements, with at least the first airflow-blocking element comprising a resiliently compressible body and being slidably movable generally along a long axis of the sleeve.
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US Patent 08739482 Firestopping apparatus with airflow-blocking elements US Patent 8739482 Firestopping apparatus with airflow-blocking elements
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Patent Number
0873948200
Patent Number
873948200
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Is a
Patent Applicant
0
Current Assignee
0
Patent Jurisdiction
Patent Number
087394820
Date of Patent
June 3, 2014
0Patent Application Number
138265910
Date Filed
March 14, 2013
0Official Website
Patent Primary Examiner
Edits on 24 Sep, 2022
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Infobox
Is a
Patent Applicant
0
Current Assignee
0
Patent Jurisdiction
Patent Number
087394820
Date of Patent
June 3, 2014
0Patent Application Number
138265910
Date Filed
March 14, 2013
0Official Website
Patent Primary Examiner
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US Patent 08739482 Firestopping apparatus with airflow-blocking elements
Infobox
Is a
Patent applicant
Current assignee
Patent jurisdiction
Patent number
08739482
Date of patent
June 3, 2014
Patent application number
13826591
Date Filed
March 14, 2013
Patent primary examiner
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