Granted Patent
Utility
US 5,028,286 · App. 07/338,451
Method of making dimensionally stable composite board and composite board produced by such method
Inventor:
Wu-Hsiung E. Hsu
Patented Case
View Patent ↗
Granted: Jul 2, 1991
Filed: Apr 14, 1989
Inventor
Wu-Hsiung E. Hsu
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.