Granted Patent
Utility
US 4,234,533 · App. 06/030,427
Method of bonding spaced sheets by molding resin therebetween
Inventor:
James W. Langlands
Patented Case
View Patent ↗
Granted: Nov 18, 1980
Filed: Apr 16, 1979
Inventor
James W. Langlands
Assignee (at issue)
Mary Frances Theresa Langlands
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.