Granted Patent
Utility
US 4,857,694 · App. 07/190,791
Method and apparatus for automatic vapor cooling when shape melting a component
Inventors:
Thomas E. Doyle, Patrick M. Ryan
Patented Case
View Patent ↗
Granted: Aug 15, 1989
Filed: May 6, 1988
Inventors
Thomas E. Doyle
Patrick M. Ryan
Assignee (at issue)
The Babcock & Wilcox Company
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.