Granted Patent
Utility
US 4,289,436 · App. 06/064,929
Delivery tray release mechanism for a bale wagon
Inventors:
Randall E. Zipser, H. Berton Stringfellow
Patented Case
View Patent ↗
Granted: Sep 15, 1981
Filed: Aug 8, 1979
Inventors
Randall E. Zipser
H. Berton Stringfellow
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.