Granted Patent
Utility
US 4,504,413 · App. 06/552,955
Acetaminophen analogs, antigens, and antibodies
Inventor:
Pyare Khanna
Patented Case
View Patent ↗
Granted: Mar 12, 1985
Filed: Nov 17, 1983
Inventor
Pyare Khanna
Assignee (at issue)
Syva 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.