Patent US2476958A successfully refreshed from Google Patents.
US2476958A
Expired / Lapsed
US
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Smoke detector and signal
Assignee: CO Two Fire Equipment Co
•
Filing: 1946-09-28
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Granted: 1949-07-26
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Expires: 1966-09-28
Abstract
No abstract record available.
Inventors
- 👤 Cahusac Clarence Noel
- 👤 Donald A Diehl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:30
CPC Classifications
G; G08; G08B; G08B29/00; G08B29/12; G08B29/14; G08B29/145; G08B17/00; G08B17/10; G08B17/11; G08B17/113
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1936707A
Cited
US1794686A
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US1889456A
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US1828894A
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DE605886C
Cited
GB394853A
Cited
US2096902A
Cited
US2079636A
Cited
US2150467A
Cited
US2298757A
Cited
US2278920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-25 | 1953-01-24 | 1953-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-25 | 1957-01-24 | 1957-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-25 | 1961-01-24 | 1961-07-26 | $7700.00 | Window Closed / Lapsed |