Granted Patent
Utility
US 6,364,198 · App. 09/550,345
Envelope having nested rings
Inventors:
Timothy J. Flynn, Patrick J. Flynn, Kenneth A. Kritz
Patented Case
View Patent ↗
Granted: Apr 2, 2002
Filed: Apr 14, 2000
Inventors
Timothy J. Flynn
Patrick J. Flynn
Kenneth A. Kritz
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.