Granted Patent
Utility
US 4,887,708 · App. 07/300,135
Drive apparatus for belt power turns
Inventors:
Robert D. Brown, Richard A. Compton
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Jan 23, 1989
Inventors
Robert D. Brown
Richard A. Compton
Assignee (at issue)
Portec, Inc.
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.