Trencher attachment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 30, 1989
Grant Date -
N/A
app pub date -
May 6, 1987
filing date -
May 6, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A tractor with a trencher and a blade or shovel on the front of the tractor, the trencher connected to the tractor by a three-point hitch, the trencher having a boom pivotal up and down and a pair of laterally spaced swivel wheels beneath the trencher supported on arms pivoted to the frame and extending rearwardly with the pivotal arms connected to the frame at a location forward of the center of gravity of the trencher.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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