IP Library Granted Patent US 4,382,446
Granted Patent Utility
US 4,382,446 · App. 06/199,738

Heat transfer devices for the scalp

Inventors: Donald E. Truelock, Richard Turner
Patented Case View Patent ↗
Granted: May 10, 1983 Filed: Oct 23, 1980
Inventors
Donald E. Truelock
Richard Turner
Assignee (at issue)
Kay Laboratories, 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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,382,446
App. No.
06/199,738
Filed
1980-10-23
Granted
1983-05-10
Kind
A