Granted Patent
Utility
US 4,356,152 · App. 06/243,441
Silicon melting crucible
Inventors:
Samuel Berkman, Michael Duffy, Harold E. Temple
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Mar 13, 1981
Inventors
Samuel Berkman
Michael Duffy
Harold E. Temple
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.