Granted Patent
Utility
US 5,285,889 · App. 07/977,147
Attachment member for conveyor chain and trolley assembly
Inventor:
Clayton C. McDonald
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Nov 16, 1992
Inventor
Clayton C. McDonald
Assignee (at issue)
JERVIS B. WEBB 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.