Granted Patent
Utility
US 4,376,358 · App. 05/752,787
Surface treating apparatus
Inventor:
John J. Shelton
Patented Case
View Patent ↗
Granted: Mar 15, 1983
Filed: Dec 20, 1976
Inventor
John J. Shelton
Assignee (at issue)
Robert E. Nelson
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.