Double-layer vacuum flask

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Description

FIG. 1 is a front elevation view of our new design for a double-layer vacuum flask;

FIG. 2 is a back elevation view thereof;

FIG. 3 is a left-side view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is a perspective view thereof.

The broken lines depict elements of the article that form no part of the claimed design.

Claims

The ornamental design for a double-layer vacuum flask, as shown and described.

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Other references
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Patent History
Patent number: D1044407
Type: Grant
Filed: Feb 10, 2022
Date of Patent: Oct 1, 2024
Assignee: Changzhou Beitesida Electronic Commerce Co., Ltd (Changzhou)
Inventor: Chao He (Changzhou)
Primary Examiner: Michael C Stout
Assistant Examiner: Tia Ruth-Renee Polidori
Application Number: 29/791,815
Classifications
Current U.S. Class: D7/510; D7/529