Trench-digging machine
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United States of America Patent
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-
Jun 14, 1988
Grant Date -
N/A
app pub date -
Nov 3, 1986
filing date -
Nov 18, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The trencher comprises a vehicle having secured to its rear a boom around which a digging chain runs. The boom is slidingly disposed in a sleeve-like frame pivoted to the rear of the vehicle and movable between a lowered operative position and a raised transport position.
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