Granted Patent
Utility
US 4,777,798 · App. 07/099,093
Universal control system for hydraulic cylinders
Inventors:
Kenneth E. Jacobson, Stanley Norland, James C. Solie
Patented Case
View Patent ↗
Granted: Oct 18, 1988
Filed: Sep 21, 1987
Inventors
Kenneth E. Jacobson
Stanley Norland
James C. Solie
Assignee (at issue)
Owatonna Tool Company
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.