US2552331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric clock fire alarm
Assignee: Individual
•
Filing: 1947-09-08
•
Granted: 1951-05-08
•
Expires: 1967-09-08
Abstract
No abstract record available.
Inventors
- 👤 Anthony H Lamb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:04
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2069622A
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US1011175A
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US1198220A
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US1849551A
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US1955558A
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US2147718A
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US2367639A
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US2318005A
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US2411752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |