Granted Patent
Utility
US 5,919,320 · App. 08/968,813
Nickel-free white gold alloy with reversible hardness characteristics
Inventors:
Dwarika P. Agarwal, Grigory Raykhtsaum
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Nov 17, 1997
Inventors
Dwarika P. Agarwal
Grigory Raykhtsaum
Assignee (at issue)
LEACHGARNER, 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.