IP Library › Granted Patent US 5,227,033
Granted Patent Utility
US 5,227,033 · App. 07/897,085

Electrolytic etching of metals to reveal internal quality

Inventors: John H. Kelly, Leonard E. Guest
Patented Case View Patent ↗
Granted: Jul 13, 1993 Filed: Jun 11, 1992
Inventors
John H. Kelly
Leonard E. Guest
Assignee (at issue)
Stelco Inc.

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Quick Facts
Patent No.
US 5,227,033
App. No.
07/897,085
Filed
1992-06-11
Granted
1993-07-13
Kind
A