Granted Patent
Utility
US 4,546,813 · App. 06/703,060
Adjustable insert for twin casting
Inventors:
John A. Grove, John W. Grove
Patented Case
View Patent ↗
Granted: Oct 15, 1985
Filed: Feb 19, 1985
Inventors
John A. Grove
John W. Grove
Assignee (at issue)
United States Steel 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.