USD252881SExpiredUtility

Apparatus for roughening and cleaning a surface or the like

45
Assignee: ARX AGPriority: May 13, 1977Filed: May 13, 1977Granted: Sep 11, 1979
Est. expiryMay 13, 1997(expired)· nominal 20-yr term from priority
Inventors:Paul Dummermuth
45
PatentIndex Score
3
Cited by
0
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an apparatus for roughening and cleaning a surface or the like, as shown.

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