Granted Patent
Utility
US 5,186,526 · App. 07/856,807
One-piece crawler pad
Inventor:
John Pennington
Patented Case
View Patent ↗
Granted: Feb 16, 1993
Filed: Mar 24, 1992
Inventor
John Pennington
Assignee (at issue)
General Chemical 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.