Patent US3063661A successfully refreshed from Google Patents.
US3063661A
Expired / Lapsed
US
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Ducted fan engine
Assignee: RTX Corp
•
Filing: 1958-03-12
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Granted: 1962-11-13
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Expires: 1978-03-12
Abstract
No abstract record available.
Inventors
- 👤 Alden F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:43
CPC Classifications
F; F02; F02K; F02K3/00; F02K3/02; F02K3/04; F02K3/06; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1949041A
Cited
US2458600A
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US2580591A
Cited
US2664700A
Cited
GB672660A
Cited
US2781634A
Cited
US2680346A
Cited
GB744196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |