Granted Patent
Utility
US 4,722,529 · App. 06/861,344
Golf balls
Inventors:
Michael Shaw, Brian F. Machin
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: May 9, 1986
Inventors
Michael Shaw
Brian F. Machin
Assignee (at issue)
Dunlop GmbH
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.