US2670596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for delivering under relatively diminished pressure gaseous products of combustion at high pressures of self-combustible solid fuels
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1950-05-04
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Granted: 1954-03-02
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Expires: 1970-05-04
Abstract
No abstract record available.
Inventors
- 👤 Whitworth Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:22
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/32; F02K9/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1983330A
Cited
US2062381A
Cited
US2169359A
Cited
US2195925A
Cited
US2342996A
Cited
US2400242A
Cited
US2457578A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |