Combination gas pressure relief valve and safety whistle
Description
The broken lines shown in the figures are for the purpose of illustrating portions of the combination gas pressure relief valve and safety whistle and form no part of the claimed design.
Claims
The ornamental design for a combination gas pressure relief valve and safety whistle, as shown and described.
Referenced Cited
U.S. Patent Documents
Patent History
Patent number: D885522
Type: Grant
Filed: Dec 20, 2018
Date of Patent: May 26, 2020
Inventor: Gerard Whitman (Lowell, MA)
Primary Examiner: Gino Colan
Application Number: 29/674,194
Type: Grant
Filed: Dec 20, 2018
Date of Patent: May 26, 2020
Inventor: Gerard Whitman (Lowell, MA)
Primary Examiner: Gino Colan
Application Number: 29/674,194
Classifications
Current U.S. Class:
Pressure Regulating Or Relieving (D23/235)