Granted Patent
Utility
US 4,355,114 · App. 06/242,418
Partially devitrified porcelain containing BaO.2MgO.2SiO.sub.2 and 2MgO.B.sub.2 O.sub.3 crystalline phases obtained from alkali metal free divalent metal oxide borosilicate glass
Inventors:
Kenneth Warren Hang, Wayne M. Anderson
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Mar 11, 1981
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.