Granted Patent
Utility
US 5,955,735 · App. 08/939,346
Apparatus and method for positively identifying synthetic silicon carbide gemstones
Inventor:
Thomas G. Coleman
Patented Case
View Patent ↗
Granted: Sep 21, 1999
Filed: Sep 29, 1997
Inventor
Thomas G. Coleman
Assignee (at issue)
C3 Corporation
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.