Granted Patent
Utility
US 5,582,287 · App. 07/989,494
Drive chain for accumulation conveyor
Inventors:
Martin A. Heit, John J. Wilkins, William C. Rau
Patented Case
View Patent ↗
Granted: Dec 10, 1996
Filed: Dec 10, 1992
Inventors
Martin A. Heit
John J. Wilkins
William C. Rau
Assignee (at issue)
Western Atlas, 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.