Granted Patent
Utility
US 4,993,544 · App. 07/412,451
Plastic modular conveyor belts and modules therefor
Inventors:
Peter K. Bailey, Michael L. Spangler
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: Sep 26, 1989
Inventors
Peter K. Bailey
Michael L. Spangler
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.