Granted Patent
Utility
US 4,565,281 · App. 06/524,059
Pressure device for conveyor
Inventor:
James H. Kramer
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Aug 17, 1983
Inventor
James H. Kramer
Assignee (at issue)
B. F. Goodrich 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.