Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Angelo Nixon0
Date of Patent
May 7, 2013
0Patent Application Number
132160710
Date Filed
August 23, 2011
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A method for installing a retrofit conversion kit for converting a door operating apparatus from overhead use to underground use and for operating a swinging door while protecting the door apparatus against moisture and dust encroachment within its underground location. A seal arrangement provides this contamination encroachment protection.
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