Granted Patent
Utility
US 4,704,086 · App. 06/913,871
J-hook force-adjustable and disconnectible connector for orthodontic headgear
Inventors:
Maclay M. Armstrong, Steven A. Houser
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: Sep 30, 1986
Inventors
Maclay M. Armstrong
Steven A. Houser
Assignee (at issue)
Unitek
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.