Granted Patent
Utility
US 4,436,674 · App. 06/484,198
Vapor mass flow control system
Inventor:
Joseph McMenamin
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Apr 12, 1983
Inventor
Joseph McMenamin
Assignee (at issue)
J.C. Schumacher 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.