US2754918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weighted blade for rotary wing aircraft
Assignee: RTX Corp
•
Filing: 1950-09-21
•
Granted: 1956-07-17
•
Expires: 1970-09-21
Abstract
No abstract record available.
Inventors
- 👤 Michael E Gluhareff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/46; B64C27/473; B21; B21C; B21C23/00; B21C23/02; B21C23/04; B21C23/14; B21C23/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB206843A
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GB278874A
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GB432555A
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US2152861A
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US2230393A
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US2320870A
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US2458686A
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US2469480A
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US2427065A
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US2460351A
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GB619694A
Cited
US2484141A
Cited
US2613893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |