Granted Patent
Utility
US 6,796,911 · App. 10/248,342
High moment of inertia putter
Inventor:
Robert M. Grace
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Jan 10, 2003
Inventor
Robert M. Grace
Assignee (at issue)
MacGregor 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.