Granted Patent
Utility
US 6,287,217 · App. 09/387,953
Multi-layer golf ball
Inventors:
Michael J. Sullivan, Viktor Keller, Thomas J. Kennedy, III, John Neill, William M. Risen, Jr.
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Sep 1, 1999
Inventors
Michael J. Sullivan
Viktor Keller
Thomas J. Kennedy, III
John Neill
William M. Risen, Jr.
Assignee (at issue)
Spalding Sports Worldwide, Inc.
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.