Granted Patent
Utility
US 4,935,274 · App. 07/237,011
Lid structure
Inventors:
John A. DeBenedictis, Carl F. Morin, Joshua Benin, James A. Lawler
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: Aug 26, 1988
Inventors
John A. DeBenedictis
Carl F. Morin
Joshua Benin
James A. Lawler
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND COMPANY
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.