Granted Patent
Utility
US 4,553,448 · App. 06/500,430
Dual-rate control assembly
Inventors:
Stephen A. Youngers, Robert G. Draney
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jun 2, 1983
Inventors
Stephen A. Youngers
Robert G. Draney
Assignee (at issue)
J. I. Case 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.