Granted Patent
Utility
US 4,523,972 · App. 06/555,781
Method of and apparatus for handling crystal ingots
Inventors:
Robert H. Cushman, Charles E. Stout
Patented Case
View Patent ↗
Granted: Jun 18, 1985
Filed: Nov 28, 1983
Inventors
Robert H. Cushman
Charles E. Stout
Assignee (at issue)
AT&T Technologies Incorporated
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.