Granted Patent
Utility
US 5,267,830 · App. 07/959,521
Pump for abrasive materials
Inventors:
Dean R. Wickoren, Richard J. Wickoren, Troy L. Pennington, Lawrence E. Klote, Lawrence R. Gardner, Ronald L. Dellinger
Patented Case
View Patent ↗
Granted: Dec 7, 1993
Filed: Oct 13, 1992
Inventors
Dean R. Wickoren
Richard J. Wickoren
Troy L. Pennington
Lawrence E. Klote
Lawrence R. Gardner
Ronald L. Dellinger
Assignee (at issue)
Innovative Material Systems, 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.