Patent US577926A successfully refreshed from Google Patents.
US577926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireman s mask
Assignee: —
•
Filing: —
•
Granted: 1897-03-02
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Expires: 1914-03-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:06
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1900-03-02 | 1900-09-01 | 1901-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1904-03-02 | 1904-09-01 | 1905-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1908-03-02 | 1908-09-01 | 1909-03-03 | $7700.00 | Window Closed / Lapsed |