Self sealing piston ring
Latest Dosmatic USA, Inc. Patents:
Description
Claims
The ornamental design for a self sealing piston ring, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D573620
Type: Grant
Filed: Feb 9, 2007
Date of Patent: Jul 22, 2008
Assignee: Dosmatic USA, Inc. (Carrollton, TX)
Inventor: Frank A. Walton (Ft. Worth, TX)
Primary Examiner: Sandra Snapp
Assistant Examiner: Patricia Palasik
Attorney: Carstens & Cahoon, LLP
Application Number: 29/276,958
Type: Grant
Filed: Feb 9, 2007
Date of Patent: Jul 22, 2008
Assignee: Dosmatic USA, Inc. (Carrollton, TX)
Inventor: Frank A. Walton (Ft. Worth, TX)
Primary Examiner: Sandra Snapp
Assistant Examiner: Patricia Palasik
Attorney: Carstens & Cahoon, LLP
Application Number: 29/276,958
Classifications
Current U.S. Class:
Drive Train (D15/148)