IP Library Granted Patent US 4,689,222
Granted Patent Utility
US 4,689,222 · App. 06/806,626

Methods and materials for alleviation of pain symptoms of malignant neoplasia

Inventor: John McMichael
Patented Case View Patent ↗
Granted: Aug 25, 1987 Filed: Dec 9, 1985
Inventor
John McMichael

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.

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Quick Facts
Patent No.
US 4,689,222
App. No.
06/806,626
Filed
1985-12-09
Granted
1987-08-25
Kind
A