Granted Patent
Utility
US 4,698,247 · App. 06/887,469
Multiple layer sheet material
Inventors:
Lee Murray, Suzanne E. Schaefer
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Jul 21, 1986
Inventors
Lee Murray
Suzanne E. Schaefer
Assignee (at issue)
American Can 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.