Granted Patent
Utility
US 4,300,923 · App. 06/138,103
Deaerator system having positive pressure indicating means
Inventors:
Sigmund P. Skoli, Robert J. Dulian, David M. Kemp
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Apr 7, 1980
Inventors
Sigmund P. Skoli
Robert J. Dulian
David M. Kemp
Assignee (at issue)
Mojonnier Bros. Co.
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.