Granted Patent
Utility
US 4,488,407 · App. 06/478,148
Process for making slush
Inventor:
Mark A. Delano
Patented Case
View Patent ↗
Granted: Dec 18, 1984
Filed: Mar 23, 1983
Inventor
Mark A. Delano
Assignee (at issue)
Union Carbide 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.