Granted Patent
Utility
US 4,810,099 · App. 07/057,300
Mixer
Inventors:
Peder K. Langsetmo, Masayuki Inoue, Robert A. Douglas, Peter M. Koenig, Alex Halasz
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: May 6, 1987
Inventors
Peder K. Langsetmo
Masayuki Inoue
Robert A. Douglas
Peter M. Koenig
Alex Halasz
Assignee (at issue)
Berwind 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.