Granted Patent
Utility
US 4,041,947 · App. 05/589,484
Flow control system
Inventors:
Steven N. Weiss, Alan Broadwin
Patented Case
View Patent ↗
Granted: Aug 16, 1977
Filed: Jun 23, 1975
Inventors
Steven N. Weiss
Alan Broadwin
Assignee (at issue)
Cavitron, 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.