Granted Patent
Utility
US 5,221,087 · App. 07/823,806
Metal golf clubs with inserts
Inventors:
Frank Fenton, Daniel A. Melanson
Patented Case
View Patent ↗
Granted: Jun 22, 1993
Filed: Jan 17, 1992
Inventors
Frank Fenton
Daniel A. Melanson
Assignee (at issue)
Lisco 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.