Granted Patent
Utility
US 4,643,909 · App. 06/784,297
Reinforced casting material
Inventor:
Gene W. Kammerer
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Oct 7, 1985
Inventor
Gene W. Kammerer
Assignee (at issue)
Johnson & Johnson Products, Inc.
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.