Granted Patent
Utility
US 4,408,942 · App. 06/276,603
Control linkage for two function bale pickup
Inventors:
L. Dennis Butler, J. Dwayne Wells
Patented Case
View Patent ↗
Granted: Oct 11, 1983
Filed: Jun 23, 1981
Inventors
L. Dennis Butler
J. Dwayne Wells
Assignee (at issue)
Sperry Corp.
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.