Granted Patent
Utility
US 6,132,323 · App. 09/221,208
Thermoplastic/thermoset hybrid golf club shafts and methods of manufacturing the same
Inventors:
Brian S. Smith, Herbert Reyes, James M. Murphy
Patented Case
View Patent ↗
Granted: Oct 17, 2000
Filed: Dec 22, 1998
Inventors
Brian S. Smith
Herbert Reyes
James M. Murphy
Assignee (at issue)
Callaway Golf 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.