Granted Patent
Utility
US 4,962,892 · App. 07/298,573
Mobile material distribution apparatus
Inventor:
C. J. Sauer
Patented Case
View Patent ↗
Granted: Oct 16, 1990
Filed: Jan 18, 1989
Inventor
C. J. Sauer
Assignee (at issue)
Chem-Farm, 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.