Expandable drinking flask
The drinking flask is shown with a symbolic break in its height. The appearance of any portion of the article within the broken lines forms no part of the claimed design. The broken line showing of a lid is for the purpose of illustrating portions of the flask and forms no part of the claimed design.
Claims
The ornamental design for an expandable drinking flask, as shown and described.
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Type: Grant
Filed: Jan 13, 2016
Date of Patent: May 9, 2017
Inventor: Derrick S. Obatake (Torrance, CA)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Andrew Kerr
Application Number: 29/551,483