US2418418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum propeller blade with steel shank
Assignee: RTX Corp
•
Filing: 1943-12-11
•
Granted: 1947-04-01
•
Expires: 1963-12-11
Abstract
No abstract record available.
Inventors
- 👤 Martin Erie
- 👤 Glen T Lampton
- 👤 Edwin E Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:55
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/02; B64C11/04; Y; Y10; Y10T; Y10T403/00; Y10T403/45; Y10T403/459
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US782349A
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US1119973A
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US1829443A
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US1780825A
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US1860522A
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US2113478A
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US2150875A
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US2193351A
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US2150876A
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US2152681A
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US2246568A
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US2294868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |