Granted Patent
Utility
US 5,938,849 · App. 09/127,521
Cement Lining slinger head tachometer assembly
Inventor:
Kenneth J. Watts
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jul 31, 1998
Inventor
Kenneth J. Watts
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.