US2614774A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flap mechanism
Assignee: RTX Corp
•
Filing: 1948-12-31
•
Granted: 1952-10-21
•
Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Raymond F Donovan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:04
CPC Classifications
B; B64; B64C; B64C9/00; B64C9/14; B64C9/16; Y; Y02; Y02T; Y02T50/00; Y02T50/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB417898A
Cited
US2137879A
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GB454556A
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US2222435A
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US2207453A
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US2235146A
Cited
US2352062A
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US2379274A
Cited
US2376636A
Cited
US2426785A
Cited
US2423984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |