Convex-concave roller
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Description
Claims
The ornamental design for a convex-concave roller, substantially as shown.
Patent History
Patent number: D678542
Type: Grant
Filed: Aug 24, 2011
Date of Patent: Mar 19, 2013
Assignee: ELC Management LLC (New York, NY)
Inventor: William R. Bickford (Ronkonkoma, NY)
Primary Examiner: Sandra Snapp
Application Number: 29/400,167
Type: Grant
Filed: Aug 24, 2011
Date of Patent: Mar 19, 2013
Assignee: ELC Management LLC (New York, NY)
Inventor: William R. Bickford (Ronkonkoma, NY)
Primary Examiner: Sandra Snapp
Application Number: 29/400,167
Classifications
Current U.S. Class:
Roller, Ball Or Similar Protuberance (D24/211)