Granted Patent
Utility
US 4,874,561 · App. 07/163,771
Method for designing parametric molding apparatus
Inventor:
David P. Spector
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Mar 3, 1988
Inventor
David P. Spector
Assignee (at issue)
Sola USA, 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.