Granted Patent
Utility
US 6,022,291 · App. 09/036,248
Apparatus and method for controlling rotational speed and direction of a drive shaft of a crop sprayer
Inventor:
Kenneth E. Weddle
Patented Case
View Patent ↗
Granted: Feb 8, 2000
Filed: Mar 6, 1998
Inventor
Kenneth E. Weddle
Assignee (at issue)
EQUIPMENT TECHNOLOGIES, INC.
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.