US2463745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm for fire detection
Assignee: Individual
•
Filing: 1946-11-06
•
Granted: 1949-03-08
•
Expires: 1966-11-06
Abstract
No abstract record available.
Inventors
- 👤 Colardo John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:57
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06; H; H01; H01H; H01H37/00; H01H37/74; H01H37/76; H01H37/767
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US662032A
Cited
US643491A
Cited
US681637A
Cited
US1132245A
Cited
US1199654A
Cited
US1239140A
Cited
US2084198A
Cited
US2247902A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |