Granted Patent
Utility
US 4,514,796 · App. 06/415,855
Method and apparatus for controlling the position of a hydraulic boom
Inventors:
John D. Saulters, Roger Scarr
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Sep 8, 1982
Inventors
John D. Saulters
Roger Scarr
Assignee (at issue)
Joy Manufacturing 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.