Granted Patent
Utility
US 4,252,549 · App. 06/044,292
Crystallization via porous tube heat transfer
Inventors:
Richard W. Chaunce, Thomas J. McGinley
Patented Case
View Patent ↗
Granted: Feb 24, 1981
Filed: May 31, 1979
Inventors
Richard W. Chaunce
Thomas J. McGinley
Assignee (at issue)
SUNTEC CO., LTD.
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.