Granted Patent
Utility
US 4,874,814 · App. 07/316,564
Cross-linked polyvinyl butyral
Inventors:
George E. Cartier, Peter H. Farmer
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Feb 27, 1989
Inventors
George E. Cartier
Peter H. Farmer
Assignee (at issue)
Monsanto 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.