Pipe coupling
Description
The broken line portions of the figure drawings are included to show unclaimed subject matter only and form no part of the claimed design. The pipe coupling is shown broken away in the middle to indicate that it has no specific length.
Claims
The ornamental design for a pipe coupling, as shown and described.
Referenced Cited
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Patent History
Patent number: D634816
Type: Grant
Filed: Dec 2, 2009
Date of Patent: Mar 22, 2011
Inventor: Benning Qian (Ningbo)
Primary Examiner: Celia A. Murphy
Assistant Examiner: John Windmuller
Attorney: Head, Johnson & Kachigian, P.C.
Application Number: 29/351,243
Type: Grant
Filed: Dec 2, 2009
Date of Patent: Mar 22, 2011
Inventor: Benning Qian (Ningbo)
Primary Examiner: Celia A. Murphy
Assistant Examiner: John Windmuller
Attorney: Head, Johnson & Kachigian, P.C.
Application Number: 29/351,243
Classifications
Current U.S. Class:
Fitting (10) (D23/259)