Granted Patent
Utility
US 4,781,365 · App. 07/009,531
Hollow elastomeric spring
Inventor:
Reginald Harrison
Patented Case
View Patent ↗
Granted: Nov 1, 1988
Filed: Feb 2, 1987
Inventor
Reginald Harrison
Assignee (at issue)
Dunlop GmbH
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.