Granted Patent
Utility
US 4,947,592 · App. 07/227,090
Particle blast cleaning apparatus
Inventors:
Daniel L. Lloyd, Newell D. Crane, David E. Moore
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Aug 1, 1988
Inventors
Daniel L. Lloyd
Newell D. Crane
David E. Moore
Assignee (at issue)
Cold Jet, LLC
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.