Granted Patent
Utility
US 4,280,320 · App. 05/936,964
Tensioning apparatus
Inventor:
Edward T. Eggers
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Aug 25, 1978
Inventor
Edward T. Eggers
Assignee (at issue)
Sperry Corp.
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.