USD297062SExpiredUtility

Scraper for cleaning boilers and furnaces

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Assignee: MILLER RICHARDPriority: Nov 12, 1986Filed: Nov 12, 1986Granted: Aug 2, 1988
Est. expiryNov 12, 2006(expired)· nominal 20-yr term from priority
Inventors:Richard L. Miller
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PatentIndex Score
2
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a scraper for cleaning boilers and furnaces, as shown.

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