Granted Patent
Utility
US 4,258,003 · App. 05/746,631
Automatic control of crystal growth
Inventors:
Donald Thomas James Hurle, Gordon Charles Joyce
Patented Case
View Patent ↗
Granted: Mar 24, 1981
Filed: Dec 1, 1976
Inventors
Donald Thomas James Hurle
Gordon Charles Joyce
Assignee (at issue)
NATIONAL RESEARCH DEVELOPMENT 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.