US2462824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single or multiengined drive for plural airscrews
Assignee: RTX Corp
•
Filing: 1944-11-03
•
Granted: 1949-02-22
•
Expires: 1964-11-03
Abstract
No abstract record available.
Inventors
- 👤 Charles H Zimmerman
- 👤 Henry J Rapuano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:24
CPC Classifications
B; B64; B64D; B64D27/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19219; Y10T74/19251; Y10T74/19256; Y10T74/19274
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR375986A
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FR498337A
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US1421803A
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US1707877A
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US1747334A
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US2108093A
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US2069408A
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US2319169A
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GB547426A
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GB547403A
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US2377457A
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US2340571A
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US2351746A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-22 | 1952-08-23 | 1953-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-22 | 1956-08-23 | 1957-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-22 | 1960-08-23 | 1961-02-22 | $7700.00 | Window Closed / Lapsed |