Granted Patent
Utility
US 4,944,629 · App. 07/322,869
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Inventor:
Johnnie E. Peveto
Patented Case
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Granted: Jul 31, 1990
Filed: Mar 14, 1989
Inventor
Johnnie E. Peveto
Assignee (at issue)
Acustar, 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.