Granted Patent
Utility
US 6,227,622 · App. 08/879,951
Multilayer skate wheel
Inventors:
John A. Roderick, Albert C. Chiang, James A. Vandergrift
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Jun 20, 1997
Inventors
John A. Roderick
Albert C. Chiang
James A. Vandergrift
Assignee (at issue)
K-2 Corporation
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.