Granted Patent
Utility
US 5,449,988 · App. 08/219,830
Vacuum motor control including float switch and in-rush current restraint
Inventors:
Russell Gurstein, Richard Westlake
Patented Case
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Granted: Sep 12, 1995
Filed: Mar 30, 1994
Inventors
Russell Gurstein
Richard Westlake
Assignee (at issue)
U.S. Products
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.