US Patent 6840541 Trailer level
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Patent abstract
A trailer tongue arrangement is provided having a power jack. The power jack is removably engaged with the tongue and includes a circular level unit thereon which indicates a level condition in the front-to-back and side-to-side directions.
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Patent Inventor Names
Duane Walters0
Date of Patent
January 11, 2005
0Patent Application Number
103309420
Date Filed
December 27, 2002
0Patent Primary Examiner
Edits on 11 Oct, 2023
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US Patent 6840541 Trailer level
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