Granted Patent
Utility
US 6,798,421 · App. 10/087,233
Same tile method
Inventor:
David R. Baldwin
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Feb 28, 2002
Inventor
David R. Baldwin
Assignee (at issue)
3D Labs Co., Ltd.
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.