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Valved couplers for fluid-conducting conduits
Assignee: Hughes Tool Co
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Filing: 1951-10-27
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Granted: 1955-12-20
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Expires: 1971-10-27
Abstract
No abstract record available.
Inventors
- 👤 Harry E Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:32
CPC Classifications
F; F16; F16L; F16L29/00; F16L29/02; F16L37/00; F16L37/08; F16L37/084; F16L37/098; F16L37/0985; F16L37/12; F16L37/133; F16L37/22; F16L37/23; F16L37/28; F16L37/30; F16L37/367; F16L37/38; F16L37/46; Y; Y10; Y10S; Y10S285/00; Y10S285/906; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1973610A
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US2168915A
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US2441363A
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US2453741A
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US2509444A
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US2545796A
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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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |