Granted Patent
Utility
US 4,572,762 · App. 06/583,661
Lost foam pattern assembly equipment
Inventor:
John H. Winston
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Feb 27, 1984
Inventor
John H. Winston
Assignee (at issue)
Outboard Marine 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.