Granted Patent
Utility
US 4,944,595 · App. 07/234,819
Apparatus for producing cement building material
Inventor:
Simon K. Hodson
Patented Case
View Patent ↗
Granted: Jul 31, 1990
Filed: Aug 19, 1988
Inventor
Simon K. Hodson
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.