US2920864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary flow reducer
Assignee: RTX Corp
•
Filing: 1956-05-14
•
Granted: 1960-01-12
•
Expires: 1976-05-14
Abstract
No abstract record available.
Inventors
- 👤 John G Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:01
CPC Classifications
F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/141; F01D5/145; F01D5/146; F01D5/30; F01D5/3007; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S415/00; Y10S415/914
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB284312A
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US1748610A
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US1961214A
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US2030993A
Cited
US2135700A
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US2135887A
Cited
US2406499A
Cited
GB630747A
Cited
US2650752A
Cited
CH308991A
Cited
FR1069279A
Cited
US2844001A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |