Granted Patent
Utility
US 6,228,319 · App. 09/245,817
Portable dross press with rising and dumping pot
Inventors:
David J. Roth, Peter G. Schirk
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Feb 5, 1999
Inventors
David J. Roth
Peter G. Schirk
Assignee (at issue)
Altek International, Inc.
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.