US2922147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire alarm system
Assignee: Individual
•
Filing: 1954-02-17
•
Granted: 1960-01-19
•
Expires: 1974-02-17
Abstract
No abstract record available.
Inventors
- 👤 Philip N Bredesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:26
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US421854A
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DE408439C
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US1131202A
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US1355041A
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US1909212A
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US2016978A
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Cited
US2431352A
Cited
US2318005A
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US2417097A
Cited
US2457403A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |