Granted Patent
Utility
US 5,094,541 · App. 07/590,881
Mixer apparatus and method of blending various materials
Inventor:
Robert D. Nelson
Patented Case
View Patent ↗
Granted: Mar 10, 1992
Filed: Oct 1, 1990
Inventor
Robert D. Nelson
Assignee (at issue)
JTM Industries, 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.