Granted Patent
Utility
US 4,553,638 · App. 06/630,746
Hose tensioning device
Inventor:
William Carl Ray, III
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jul 13, 1984
Inventor
William Carl Ray, III
Assignee (at issue)
Allis-Chalmers Corporation
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.