Patent US3484826A successfully refreshed from Google Patents.
US3484826A
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US
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Impact landing system
Assignee: Boeing North American Inc
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Filing: 1967-10-18
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Granted: 1969-12-16
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Expires: 1987-10-18
Abstract
No abstract record available.
Inventors
- 👤 John F Mccarthy Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:00
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/62; B64G1/625
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2228860A
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US2898058A
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US2944771A
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US2973172A
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US2961204A
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US3010540A
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US3029046A
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US3090580A
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US3143321A
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US3301507A
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 |