IP Library › Granted Patent US 1,044,407
Granted Patent S1
US 1,044,407 · App. 29/791,815 · Granted Oct 1, 2024

Double-layer vacuum flask

Inventor: Chao He (Changzhou, CN)
Assignee: Changzhou Beitesida Electronic Commerce Co., Ltd
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Quick Facts
Patent No.
US 1,044,407
App. No.
29/791,815
Granted
Oct 1, 2024
Kind
S1
Claims (1)

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