Granted Patent
Utility
US 3,955,673 · App. 05/524,428
Rotary shaft packing replacement kit
Inventor:
Donald Edson Fosness
Patented Case
View Patent ↗
Granted: May 11, 1976
Filed: Nov 18, 1974
Inventor
Donald Edson Fosness
Assignee (at issue)
Johns Manville
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.