USD414859SExpiredUtility

Single-piece grate bar key for stokers feeding steam generator furnaces

Assignee: HAPGOOD MARK RPriority: Nov 27, 1998Filed: Nov 27, 1998Granted: Oct 5, 1999

Est. expiryNov 27, 2018(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for single-piece grate bar key for stokers feeding steam generator furnaces, as shown and described.

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