Granted Patent
Utility
US 4,999,935 · App. 07/531,523
Hydraulic system and apparatus for use with vehicle accessory units
Inventors:
Edward A. Simi, Gary E. Watson
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: May 31, 1990
Inventors
Edward A. Simi
Gary E. Watson
Assignee (at issue)
Douglas Dynamics, L.L.C.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.