Granted Patent
Utility
US 4,638,906 · App. 06/799,402
Conveyor assembly
Inventor:
Michael E. Winiasz
Patented Case
View Patent ↗
Granted: Jan 27, 1987
Filed: Nov 19, 1985
Inventor
Michael E. Winiasz
Assignee (at issue)
Harris Graphics
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.