Granted Patent
Utility
US 4,982,530 · App. 07/257,769
Extruded core sections for wood fenestration mounting frames and sashes
Inventor:
Douglas Palmer
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Oct 14, 1988
Inventor
Douglas Palmer
Assignee (at issue)
SNE Enterprises, 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.