Granted Patent
Utility
US 4,316,888 · App. 06/140,493
Method and composition of reducing pain
Inventor:
Eric L. Nelson
Patented Case
View Patent ↗
Granted: Feb 23, 1982
Filed: Apr 15, 1980
Inventor
Eric L. Nelson
Assignee (at issue)
Nelson Research & Development 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.