Granted Patent
Utility
US 6,604,930 · App. 09/619,066
Concrete block molding machinery
Inventors:
Howard N. Lumsden, Lee F. Marzean, Donald Robert Andor, Michael Ponik
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Jul 19, 2000
Inventors
Howard N. Lumsden
Lee F. Marzean
Donald Robert Andor
Michael Ponik
Assignee (at issue)
BESSER 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.