Patent US3237667A successfully refreshed from Google Patents.
US2320719A
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Valved connector
Assignee: UNITED AIR LINES TRANSP CORP
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Filing: 1941-08-29
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Granted: 1943-06-01
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Expires: 1961-08-29
Abstract
No abstract record available.
Inventors
- 👤 Wilfred W Davies
- 👤 George A Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:54
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/40; F16L37/08; F16L37/084; F16L37/086
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-05-31 | 1946-11-30 | 1947-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-05-31 | 1950-11-30 | 1951-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-05-31 | 1954-11-30 | 1955-06-01 | $7700.00 | Window Closed / Lapsed |