Granted Patent
Utility
US 5,205,300 · App. 07/896,525
Method for determining effectiveness of relaxer treatment
Inventors:
Geoffrey Hawkins, Clyde B. Simpson, Jr., Gustave J. Klein
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Jun 9, 1992
Inventors
Geoffrey Hawkins
Clyde B. Simpson, Jr.
Gustave J. Klein
Assignee (at issue)
Revlon Consumer Products Corporation
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.