Granted Patent
Utility
US 6,533,272 · App. 09/725,644
Baseball game apparatus
Inventors:
Peter J. Hylak, Jason Marshall, Lyle Williman
Patented Case
View Patent ↗
Granted: Mar 18, 2003
Filed: Nov 29, 2000
Inventors
Peter J. Hylak
Jason Marshall
Lyle Williman
Assignee (at issue)
SPARTUS LLC
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.