Granted Patent
Utility
US 6,755,446 · App. 10/173,071
Waste pipe connector
Inventors:
Charles J. Mintz, James A. Kovach
Patented Case
View Patent ↗
Granted: Jun 29, 2004
Filed: Jun 17, 2002
Inventors
Charles J. Mintz
James A. Kovach
Assignee (at issue)
Superior Workshop Tool Company
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.