Granted Patent
Utility
US 6,405,443 · App. 09/552,502
Geometric construction device
Inventors:
Joseph P. Thorn, Kevin J. Anderson
Patented Case
View Patent ↗
Granted: Jun 18, 2002
Filed: Apr 19, 2000
Inventors
Joseph P. Thorn
Kevin J. Anderson
Assignee (at issue)
A. Daigger & Company, Inc. ETA Division
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.