Granted Patent
Utility
US 4,949,742 · App. 07/344,325
Temperature operated gas valve
Inventors:
Joseph F. Rando, Ilya M. Fishman
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Apr 26, 1989
Inventors
Joseph F. Rando
Ilya M. Fishman
Assignee (at issue)
Spectra-Physics, Inc.
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.