Granted Patent
Utility
US 4,851,287 · App. 07/149,993
Laminate comprising three sheets of a thermoplastic resin
Inventor:
Tyler F. Hartsing, Jr.
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Jan 28, 1988
Inventor
Tyler F. Hartsing, Jr.
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.