Granted Patent
Utility
US 4,424,080 · App. 06/367,904
Process for hydrolysis removal of condensation polymer from various objects
Inventor:
Frank Days
Patented Case
View Patent ↗
Granted: Jan 3, 1984
Filed: Apr 13, 1982
Inventor
Frank Days
Assignee (at issue)
Beringer
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.