Granted Patent
Utility
US 4,809,883 · App. 07/104,945
Sand dispensing assembly
Inventor:
Jaime F. Pozo
Patented Case
View Patent ↗
Granted: Mar 7, 1989
Filed: Oct 5, 1987
Inventor
Jaime F. Pozo
Assignee (at issue)
AMSTED INDUSTRIES INCORPORATED
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.