Granted Patent
Utility
US 5,472,012 · App. 08/182,219
Storage tank shutoff valve
Inventors:
Chester W. Wood, Charles A. Sunderhaus, Jim E. Kesterman, Lawrence R. Blasch
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Jan 14, 1994
Inventors
Chester W. Wood
Charles A. Sunderhaus
Jim E. Kesterman
Lawrence R. Blasch
Assignee (at issue)
Dover Associates, 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.