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Patent Number Title Assignee Status Filing Date Grant Date Expires Remaining Claims Actions
US4849731A Scanning obstacle detection apparatus Caterpillar Industrial Inc Expired / Lapsed 1988-07-14 1989-07-18 2008-07-14 0.0 yrs 26
US3452848A Oil clutch cooling apparatus Caterpillar Industrial Inc Expired / Lapsed 1968-02-23 1969-07-01 1988-02-23 0.0 yrs 0