Granted Patent
Utility
US 4,164,104 · App. 05/846,302
Apparatus and method for obtaining a shortened blast pattern with a centrifugal throwing wheel
Inventors:
James H. Carpenter, Donald G. Corderman
Patented Case
View Patent ↗
Granted: Aug 14, 1979
Filed: Oct 28, 1977
Inventors
James H. Carpenter
Donald G. Corderman
Assignee (at issue)
Carborundum Corporation
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.