Granted Patent
Utility
US 4,951,807 · App. 07/213,171
Non-collapsing inside edge conveyor belt with dual pitch links
Inventors:
Gerald C. Roinestad, Michael R. Straight
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Jun 29, 1988
Inventors
Gerald C. Roinestad
Michael R. Straight
Assignee (at issue)
Ashworth Bros., 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.