US3004607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Helicopter metal main rotor blade
Assignee: Bell Aerospace Corp
•
Filing: 1956-05-15
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Granted: 1961-10-17
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Expires: 1976-05-15
Abstract
No abstract record available.
Inventors
- 👤 George H Linnabery
- 👤 John D Beadling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:35
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2214339A
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US2303707A
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US2482936A
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GB635823A
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US2556736A
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GB644900A
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US2512264A
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US2754915A
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US2751667A
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US2694458A
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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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |