Patent US3439700A successfully refreshed from Google Patents.
US3439700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refuelling aircraft
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1966-07-05
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Granted: 1969-04-22
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Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 Norman J Preston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:53
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/28; B60; B60P; B60P3/00; B60P3/22; B60P3/224; B60P3/2265; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6881; Y10T137/8593; Y10T137/8807
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1185459A
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US2648201A
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US2915081A
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US2948306A
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US3199553A
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US3114392A
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US3281080A
Cited
US3291256A
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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) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |