Granted Patent
Utility
US 4,236,575 · App. 06/078,619
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Inventors:
LeRoy J. Raseley, Leslie L. Forster, Edward F. Hay, deceased
Patented Case
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Granted: Dec 2, 1980
Filed: Sep 24, 1979
Inventors
LeRoy J. Raseley
Leslie L. Forster
Edward F. Hay, deceased
Assignee (at issue)
Ecolaire Incorporated
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.