Granted Patent
Utility
US 5,358,935 · App. 07/978,768
Nonantigenic keratinous protein material
Inventors:
Robert A. Smith, Cheryl R. Blanchard, James Lankford, Jr.
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Nov 19, 1992
Inventors
Robert A. Smith
Cheryl R. Blanchard
James Lankford, Jr.
Assignee (at issue)
Robert W. Smith, Jr.
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.