Stepped mandrel
Description
The broken lines in the drawings depict unclaimed environmental subject matter.
Claims
The ornamental design for a stepped mandrel, as shown and described.
Referenced Cited
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Patent History
Patent number: D640298
Type: Grant
Filed: Jan 11, 2011
Date of Patent: Jun 21, 2011
Inventor: William E. Launius, Jr. (Millstadt, IL)
Primary Examiner: Patricia Palasik
Attorney: Charles McCloskey
Application Number: 29/383,036
Type: Grant
Filed: Jan 11, 2011
Date of Patent: Jun 21, 2011
Inventor: William E. Launius, Jr. (Millstadt, IL)
Primary Examiner: Patricia Palasik
Attorney: Charles McCloskey
Application Number: 29/383,036
Classifications