Granted Patent
Utility
US 4,425,007 · App. 06/233,856
Tread belt link and cooperating drive tumbler
Inventor:
Ronald J. Soeteber
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: Feb 12, 1981
Inventor
Ronald J. Soeteber
Assignee (at issue)
Bucyrus Erie 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.