Patent US6261586B1 successfully refreshed from Google Patents.
US2552077A
Expired / Lapsed
US
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Coupling for flexible pipes
Assignee: High Pressure Components Ltd
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Filing: 1947-12-03
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Granted: 1951-05-08
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Expires: 1967-12-03
Abstract
No abstract record available.
Inventors
- 👤 Williams John Charles
- 👤 Kemlo Henry Archibald
- 👤 Thompson James Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:54
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/22; F16L33/222
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |