Granted Patent
Utility
US 4,335,742 · App. 05/761,679
Evaporator pressure regulator
Inventor:
Henry Jacyno
Patented Case
View Patent ↗
Granted: Jun 22, 1982
Filed: Jan 24, 1977
Inventor
Henry Jacyno
Assignee (at issue)
The Singer Company Limited
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.