US2522248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-detecting switch
Assignee: Glenn L Martin Co
•
Filing: 1946-09-13
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Granted: 1950-09-12
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Expires: 1966-09-13
Abstract
No abstract record available.
Inventors
- 👤 Garth L Bair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:43
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/04; A; A62; A62C; A62C3/00; A62C3/07; A62C3/08
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) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |