US2797936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for refueling in flight
Assignee: Parker Appliance Co
•
Filing: 1953-12-18
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Granted: 1957-07-02
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Expires: 1973-12-18
Abstract
No abstract record available.
Inventors
- 👤 Clair Camille S Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:45
CPC Classifications
B; B64; B64D; B64D39/00; B64D39/06; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6906; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199588A
Cited
FR865201A
Cited
US2634927A
Cited
US2634926A
Cited
GB657730A
Cited
US2692102A
Cited
US2665926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |