Granted Patent
Utility
US 6,648,777 · App. 09/993,422
Multi-layer golf ball
Inventors:
Thomas J. Kennedy, III, Michael J. Tzivanis, Viktor Keller, William M. Risen, Jr., Mark L. Binette, John L. Nealon
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Nov 5, 2001
Inventors
Thomas J. Kennedy, III
Michael J. Tzivanis
Viktor Keller
William M. Risen, Jr.
Mark L. Binette
John L. Nealon
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.