US3484174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary wing system
Assignee: Kaman Corp
•
Filing: 1968-04-08
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Granted: 1969-12-16
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Expires: 1988-04-08
Abstract
No abstract record available.
Inventors
- 👤 George A Mccoubrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:34
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/32; B64C27/33; B64C27/37; B64C27/41; B64C27/43; B64C27/46; B64C27/473; B64C27/48; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR532399A
Cited
US2627928A
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US2486710A
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US2830669A
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US3237697A
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US3292710A
Cited
US3288395A
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US3321019A
Cited
US3310117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |