Granted Patent
Utility
US 4,388,320 · App. 06/354,454
3-Aminopropoxyaryl derivative in the treatment of tremor
Inventor:
Erwin Ringwald
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Mar 3, 1982
Inventor
Erwin Ringwald
Assignee (at issue)
Sandoz AG
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.