Patent US1475267A successfully refreshed from Google Patents.
Patent US2311844A successfully refreshed from Google Patents.
US2311844A
Expired / Lapsed
US
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Fire extinguishing system
Assignee: American-la France-Foamite Corp
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Filing: 1937-12-11
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Granted: 1943-02-23
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Expires: 1957-12-11
Abstract
No abstract record available.
Inventors
- 👤 Charles H Lindsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:34
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/0009; A62C99/0018; A62C99/0027; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86501; Y10T137/86911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-02-22 | 1946-08-24 | 1947-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-02-22 | 1950-08-24 | 1951-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-02-22 | 1954-08-24 | 1955-02-23 | $7700.00 | Window Closed / Lapsed |