Granted Patent
Utility
US 6,443,858 · App. 09/877,651
Golf ball with high coefficient of restitution
Inventors:
David Bartels, Michael S. Yagley, Pijush Dewanjee, Steven S. Ogg
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Jun 8, 2001
Inventors
David Bartels
Michael S. Yagley
Pijush Dewanjee
Steven S. Ogg
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.