Granted Patent
Utility
US 4,481,001 · App. 06/498,292
Human skin model for intradermal injection demonstration or training
Inventors:
Thomas Graham, Eric Sabelman
Patented Case
View Patent ↗
Granted: Nov 6, 1984
Filed: May 26, 1983
Inventors
Thomas Graham
Eric Sabelman
Assignee (at issue)
COLLAGEN 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.