Granted Patent
Utility
US 4,365,072 · App. 06/313,942
Biphenyl aldehydes
Inventor:
Avinash C. Mehta
Patented Case
View Patent ↗
Granted: Dec 21, 1982
Filed: Oct 22, 1981
Inventor
Avinash C. Mehta
Assignee (at issue)
Polaroid Corporation
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.