Granted Patent
Utility
US 5,410,826 · App. 08/024,393
Assembly and method for tooth tip retention
Inventors:
Darryl R. Immel, Andrew P. Dretzka, Harvey J. Kallenberger
Patented Case
View Patent ↗
Granted: May 2, 1995
Filed: Mar 1, 1993
Inventors
Darryl R. Immel
Andrew P. Dretzka
Harvey J. Kallenberger
Assignee (at issue)
Harnischfeger Corporation
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.