Granted Patent
Utility
US 5,776,010 · App. 08/787,154
Weight structure on a golf club head
Inventors:
Richard C. Helmstetter, Thomas R. Hilton, Donald A. Bistline, Victor S. Dennis
Patented Case
View Patent ↗
Granted: Jul 7, 1998
Filed: Jan 22, 1997
Inventors
Richard C. Helmstetter
Thomas R. Hilton
Donald A. Bistline
Victor S. Dennis
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.