USD331499SExpiredUtility

Cleaning brush

72
Assignee: TSAI CHEN-HSIENPriority: Dec 11, 1990Filed: Dec 11, 1990Granted: Dec 8, 1992
Est. expiryDec 11, 2010(expired)· nominal 20-yr term from priority
Inventors:Chen-Hsien Tsai
72
PatentIndex Score
18
Cited by
4
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a cleaning brush, as shown and described.

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