Granted Patent
Utility
US 4,256,796 · App. 06/091,091
Partially devitrified porcelain composition and articles prepared with same
Inventors:
Kenneth Warren Hang, Wayne M. Anderson
Patented Case
View Patent ↗
Granted: Mar 17, 1981
Filed: Nov 5, 1979
Inventors
Kenneth Warren Hang
Wayne M. Anderson
Assignee (at issue)
RCA 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.