IP Library › Granted Patent US 6,632,303
Granted Patent Utility
US 6,632,303 · App. 09/758,016

Stress relieved grinding ball having hard outer shell

Inventor: Christian Jäger
Patented Case View Patent ↗
Granted: Oct 14, 2003 Filed: Jan 10, 2001
Inventor
Christian Jäger
Assignee (at issue)
Stelco Inc.

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Quick Facts
Patent No.
US 6,632,303
App. No.
09/758,016
Filed
2001-01-10
Granted
2003-10-14
Kind
B2