Granted Patent
Utility
US 4,476,655 · App. 06/410,619
Link and flight assembly for blast treatment apparatus
Inventor:
Donald I. Ansbaugh
Patented Case
View Patent ↗
Granted: Oct 16, 1984
Filed: Aug 23, 1982
Inventor
Donald I. Ansbaugh
Assignee (at issue)
Wheelabrator-Frye Inc.
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.