Granted Patent
Utility
US 4,646,812 · App. 06/778,633
Flow casting
Inventor:
Robert E. Maringer
Patented Case
View Patent ↗
Granted: Mar 3, 1987
Filed: Sep 20, 1985
Inventor
Robert E. Maringer
Assignee (at issue)
Battelle 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.