Granted Patent
Utility
US 6,402,360 · App. 09/276,411
Internal batch mixing machines and rotors
Inventor:
Narku O. Nortey
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Mar 25, 1999
Inventor
Narku O. Nortey
Assignee (at issue)
Skinner Engine Company
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.