Granted Patent
Utility
US 4,791,549 · App. 07/123,287
Boom control system
Inventors:
Richard K. Heiser, Thomas R. Fulkerson, Royal R. Hawkins
Patented Case
View Patent ↗
Granted: Dec 13, 1988
Filed: Nov 20, 1987
Inventors
Richard K. Heiser
Thomas R. Fulkerson
Royal R. Hawkins
Assignee (at issue)
Sundstrand Corporation
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.