US2566235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire preventing means for power plants, particularly on aircraft
Assignee: Graviner Manufacturing Co Ltd
•
Filing: 1943-11-30
•
Granted: 1951-08-28
•
Expires: 1963-11-30
Abstract
No abstract record available.
Inventors
- 👤 Mathisen Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:45
CPC Classifications
A; A62; A62C; A62C3/00; A62C3/07; A62C3/08; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819; Y10T137/1827
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1427830A
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US1630251A
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GB216792A
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US2015995A
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US2320305A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |