US2551111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Revolving combustion chamber
Assignee: DANIEL AND FLORENCE GUGGENHEIM
•
Filing: 1946-06-28
•
Granted: 1951-05-01
•
Expires: 1966-06-28
Abstract
No abstract record available.
Inventors
- 👤 Esther C Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:11
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/66; F02C; F02C3/00; F02C3/14; F02C3/16; F02C3/165; F02K7/00; F02K7/005; Y; Y10; Y10S; Y10S60/00; Y10S60/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2432359A
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GB227151A
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FR648107A
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GB366450A
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US2074098A
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US2142601A
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US2124462A
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US2220066A
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US2397357A
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US2409551A
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US2396130A
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US2423183A
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US2433107A
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US2474685A
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US2485502A
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US2446266A
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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) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |