Granted Patent
Utility
US 5,147,031 · App. 07/683,249
Flat stroke conveyor
Inventor:
James H. Carpenter
Patented Case
View Patent ↗
Granted: Sep 15, 1992
Filed: Apr 10, 1991
Inventor
James H. Carpenter
Assignee (at issue)
Pangborn Corporation
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.