Patent · US Active

Face mask

USD821568S1 · kind S1 · design

27Cited by

12References

1Claims

0Family size

Assignee

Blueair AB · SE

Inventors

Fredrik Nilsson · Svedala, SE
Walter Frost · Stockholm, SE

Key dates

Filing date	Jan 16, 2017
Grant date	Jun 26, 2018
Priority date	—
Expiry date	Jun 26, 2033

Classification

Technology area (CPC —)General

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