Granted Patent
Utility
US 4,692,964 · App. 06/836,248
Concealed self-closing hinge
Inventor:
William DeBruyn
Patented Case
View Patent ↗
Granted: Sep 15, 1987
Filed: Mar 5, 1986
Inventor
William DeBruyn
Assignee (at issue)
ARTERICA 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.