Granted Patent
Utility
US 5,027,474 · App. 07/574,907
Concealed self-closing hinge with leaf spring
Inventor:
Michael J. Bowers, II
Patented Case
View Patent ↗
Granted: Jul 2, 1991
Filed: Aug 30, 1990
Inventor
Michael J. Bowers, II
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.