US841743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm-gage.
Assignee: BOSTON AUTOMATIC FIRE ALARM Co
•
Filing: 1904-02-17
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Granted: 1907-01-22
•
Expires: 1924-02-17
Abstract
No abstract record available.
Inventors
- 👤 George A Wall
- 👤 John H Derby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:33
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; G; G01; G01P; G01P1/00; G01P1/07; G01P1/08; G01P1/10; G01P1/11
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) | 1910-01-21 | 1910-07-23 | 1911-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-01-21 | 1914-07-23 | 1915-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-01-21 | 1918-07-23 | 1919-01-22 | $7700.00 | Window Closed / Lapsed |