US2712356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor blade for helicopters
Assignee: Mcculloch Motors Corp
•
Filing: 1951-05-28
•
Granted: 1955-07-05
•
Expires: 1971-05-28
Abstract
No abstract record available.
Inventors
- 👤 Dragoljub K Jovanovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2254821A
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US2303707A
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US2312095A
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US2469480A
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US2465007A
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US2475337A
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US2509184A
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US2566701A
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US2580363A
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US2568230A
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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) | 1958-07-04 | 1959-01-03 | 1959-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-04 | 1963-01-03 | 1963-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-04 | 1967-01-03 | 1967-07-05 | $7700.00 | Window Closed / Lapsed |