US2515645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding means for rotating combustion chambers
Assignee: DANIEL AND FLORENCE GUGGENHEIM
•
Filing: 1947-03-22
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Granted: 1950-07-18
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Expires: 1967-03-22
Abstract
No abstract record available.
Inventors
- 👤 Esther C Goddard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:32
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/42; F02K9/60; F02K9/62; F02K9/66; Y; Y10; Y10S; Y10S60/00; Y10S60/915
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) | 1953-07-17 | 1954-01-16 | 1954-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-17 | 1958-01-16 | 1958-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-17 | 1962-01-16 | 1962-07-18 | $7700.00 | Window Closed / Lapsed |