Granted Patent
Utility
US 5,413,638 · App. 07/934,037
Apparatus for metalizing internal surfaces of tubular metal bodies
Inventors:
Philip A. Bernstein, James L. Schuppe
Patented Case
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Granted: May 9, 1995
Filed: Aug 21, 1992
Inventors
Philip A. Bernstein
James L. Schuppe
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.