US2727761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Couplers for fluid-conducting conduits
Assignee: Hughes Tool Co
•
Filing: 1951-10-27
•
Granted: 1955-12-20
•
Expires: 1971-10-27
Abstract
No abstract record available.
Inventors
- 👤 Harry E Elliott
- 👤 Eugene D Moskow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:29
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/46; F16L37/08; F16L37/084; F16L37/088; F16L37/092; F16L37/098; F16L37/0985; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/8667; Y10T137/86694; Y10T137/86702
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1838549A
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US2040177A
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US1904061A
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US1966278A
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US2129704A
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US2441363A
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US2453741A
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US2509444A
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US2463326A
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US2553680A
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US2612389A
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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 |