Granted Patent
Utility
US 4,246,064 · App. 06/054,124
Double crucible crystal growing process
Inventors:
Thomas J. Dewees, John Stewart Fangman, Wen-Bin Lin
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Jul 2, 1979
Inventors
Thomas J. Dewees
John Stewart Fangman
Wen-Bin Lin
Assignee (at issue)
Western Electric Company, 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.