Granted Patent
Utility
US 5,958,454 · App. 08/866,030
Effervescent bath tablet compositions
Inventors:
David O. Schrempf, Ward M. Smith
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: May 30, 1997
Inventors
David O. Schrempf
Ward M. Smith
Assignee (at issue)
R&D Ventures, 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.