Patent US2418025A successfully refreshed from Google Patents.
US2464211A
Expired / Lapsed
US
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Smoke detector and signal for airplanes
Assignee: CO Two Fire Equipment Co
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Filing: 1945-07-13
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Granted: 1949-03-15
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Expires: 1965-07-13
Abstract
No abstract record available.
Inventors
- 👤 Cahusac Clarence Noel
- 👤 Frank B Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:32
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/103; G08B17/107; A; A62; A62C; A62C3/00; A62C3/07; A62C3/08; G08B17/11; G08B17/113
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) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |