Granted Patent
Utility
US 5,174,439 · App. 07/725,432
Modular plastic turn belt conveyor system, module, belt and drive therefor
Inventors:
Michael L. Spangler, Thomas O. Perdue
Patented Case
View Patent ↗
Granted: Dec 29, 1992
Filed: Jul 3, 1991
Inventors
Michael L. Spangler
Thomas O. Perdue
Assignee (at issue)
Cambridge Wire Cloth 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.