Granted Patent
Utility
US 4,941,297 · App. 06/765,363
Flared vane for abrasive blasting wheel
Inventor:
James H. Carpenter
Patented Case
View Patent ↗
Granted: Jul 17, 1990
Filed: Aug 13, 1985
Inventor
James H. Carpenter
Assignee (at issue)
Pangborn 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.