Six-sided exhaust stack
Description
Claims
The ornamental design for a six-sided exhaust stack, as shown.
Referenced Cited
U.S. Patent Documents
Patent History
Patent number: D718691
Type: Grant
Filed: Jun 18, 2013
Date of Patent: Dec 2, 2014
Inventors: Walter Hallam (Longwood, FL), Nicholas Dvorak (Enterprise, FL)
Primary Examiner: Michael A Pratt
Application Number: 29/458,279
Type: Grant
Filed: Jun 18, 2013
Date of Patent: Dec 2, 2014
Inventors: Walter Hallam (Longwood, FL), Nicholas Dvorak (Enterprise, FL)
Primary Examiner: Michael A Pratt
Application Number: 29/458,279
Classifications
Current U.S. Class:
Tail Pipe Extension Or Muffler (D12/194)