Granted Patent
Utility
US 4,724,595 · App. 06/865,482
Bladder mandrel for hydraulic expansions of tubes and sleeves
Inventor:
David A. Snyder
Patented Case
View Patent ↗
Granted: Feb 16, 1988
Filed: May 21, 1986
Inventor
David A. Snyder
Assignee (at issue)
Westinghouse Electric Company LLC
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.