US2665686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Face mask
Assignee: Individual
•
Filing: 1952-03-17
•
Granted: 1954-01-12
•
Expires: 1972-03-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin E Wood
- 👤 William A Hafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:52
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/02; A61F9/026; A41; A41D; A41D13/00; A41D13/05; A41D13/11; A41D13/1184; A61F9/028; A62; A62B; A62B9/00; A62B9/003
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |