Granted Patent
Utility
US 6,067,993 · App. 09/204,657
Filter adapter for use with smoking apparatus
Inventor:
Thomas P. Mahoney
Patented Case
View Patent ↗
Granted: May 30, 2000
Filed: Dec 2, 1998
Inventor
Thomas P. Mahoney
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.