Granted Patent
Utility
US 4,044,977 · App. 05/677,576
Bushing type mount with triple spring rate
Inventor:
Dennis D. Feucht
Patented Case
View Patent ↗
Granted: Aug 30, 1977
Filed: Apr 16, 1976
Inventor
Dennis D. Feucht
Assignee (at issue)
Caterpillar Tractor Co.
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.