Patent EP0619101A1 successfully refreshed from Google Patents.
US2702171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flotation undercarriage for rotary wing aircraft
Assignee: RTX Corp
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Filing: 1951-08-18
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Granted: 1955-02-15
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Expires: 1971-08-18
Abstract
No abstract record available.
Inventors
- 👤 Edward F Katzenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:15
CPC Classifications
B; B64; B64C; B64C25/00; B64C25/32; B64C25/54; B64C2025/325
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2396189A
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US2439196A
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US2574404A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |