Patent · US Active

Facemask pressure adjustment device

USD892304S1 · kind S1 · design

0Cited by
20References
1Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 4, 2019
Grant dateAug 4, 2020
Priority date—
Expiry dateAug 4, 2035

Classification

  • Technology area (CPC —)General

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.