Granted Patent
Utility
US 4,452,133 · App. 06/472,512
Cam guide operating mechanism for roll baling machine
Inventor:
Donald O. Bigelow
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Mar 7, 1983
Inventor
Donald O. Bigelow
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.