Granted Patent
Utility
US 6,575,845 · App. 09/683,856
Multiple material golf club head
Inventors:
J. Andrew Galloway, Richard C. Helmstetter, Matthew T. Cackett, Alan Hocknell, D. Clayton Evans, Herbert Reyes, Garth W. Smith, James M. Murphy
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Apr 22, 2002
Inventors
J. Andrew Galloway
Richard C. Helmstetter
Matthew T. Cackett
Alan Hocknell
D. Clayton Evans
Herbert Reyes
Garth W. Smith
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.