Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
John David Lowman0
Date of Patent
May 29, 2012
0Patent Application Number
116083770
Date Filed
December 8, 2006
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Disclosed is a drain plug for an enclosure that contains a female-threaded opening. The drain plug contains a male-threaded portion and a head portion. The head portion contains a drive structure, an annular groove of substantially rectangular cross section, and a washer of substantially rectangular cross section in the groove. An outer wall of the annular groove is positioned to contact the enclosure when secured to the female-threaded opening.
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