Granted Patent
Utility
US 4,402,163 · App. 06/245,028
Vane retention apparatus for abrasive blasting machine
Inventors:
James H. Carpenter, Donald G. Corderman
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: Mar 18, 1981
Inventors
James H. Carpenter
Donald G. Corderman
Assignee (at issue)
Kennecott Holdings 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.