US2869647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for detecting and suppressing explosions
Assignee: Graviner Manufacturing Co Ltd
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Filing: 1954-04-06
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Granted: 1959-01-20
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Expires: 1974-04-06
Abstract
No abstract record available.
Inventors
- 👤 Mathisen Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:54
CPC Classifications
A; A62; A62C; A62C99/00; A62C99/009; G; G08; G08B; G08B17/00; G08B17/12; Y; Y10; Y10S; Y10S264/00; Y10S264/67
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) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |