Granted Patent
Utility
US 6,620,056 · App. 10/249,054
Golf club head
Inventors:
J. Andrew Galloway, Richard C. Helmstetter, Ronald C. Boyce, Homer E. Aguinaldo, Curtis S. Woolley, Alan Hocknell
Patented Case
View Patent ↗
Granted: Sep 16, 2003
Filed: Mar 12, 2003
Inventors
J. Andrew Galloway
Richard C. Helmstetter
Ronald C. Boyce
Homer E. Aguinaldo
Curtis S. Woolley
Alan Hocknell
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.