Granted Patent
Utility
US 4,793,156 · App. 07/010,408
Gem setting with channel-shaped support
Inventor:
Ernest W. Pence
Patented Case
View Patent ↗
Granted: Dec 27, 1988
Filed: Feb 3, 1987
Inventor
Ernest W. Pence
Assignee (at issue)
Keystone Findings, 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.