Granted Patent
Utility
US 4,249,988 · App. 05/886,865
Growing crystals from a melt by controlling additions of material thereto
Inventors:
Robert J. Lavigna, Raymond E. Reusser
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Mar 15, 1978
Inventors
Robert J. Lavigna
Raymond E. Reusser
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.