Granted Patent
Utility
US 4,765,338 · App. 06/454,413
Reuseable heat transfer devices for the scalp
Inventors:
Richard Turner, Vernon E. Stewart
Patented Case
View Patent ↗
Granted: Aug 23, 1988
Filed: Dec 29, 1982
Inventors
Richard Turner
Vernon E. Stewart
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.