Mechanized unit for protectively encasing a utility in a trench with processed excavated trench material | Patent Number 07310896
US 07310896 B2Filled DateDec 30, 2005
Priority DateNov 24, 2003
Publication DateJul 20, 2006
Expiration DateNov 24, 2023
Inventor/ApplicantsMichael E. Lopata
ExaminesNGUYEN, MAI T
Art Unit3671
Technology Center3600
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