US2540665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanism for coaxial feeding of two combustion liquids to a combustion chamber
Assignee: DANIEL AND FLORENCE GUGGENHEIM
•
Filing: 1946-02-01
•
Granted: 1951-02-06
•
Expires: 1966-02-01
Abstract
No abstract record available.
Inventors
- 👤 Esther C Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:39
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/44; F02K9/60; F02K9/62; F02K9/64; Y; Y10; Y10S; Y10S60/00; Y10S60/915
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US861662A
Cited
US1510183A
Cited
US1857556A
Cited
GB331555A
Cited
DE608242C
Cited
US2135786A
Cited
DE683439C
Cited
US2168313A
Cited
US2183313A
Cited
US2404335A
Cited
US2396567A
Cited
US2405465A
Cited
US2407852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |