Granted Patent
Utility
US 4,814,529 · App. 06/933,837
Cross-linked polyvinyl butyral
Inventors:
George E. Cartier, Peter H. Farmer
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Nov 24, 1986
Inventors
George E. Cartier
Peter H. Farmer
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.