Patent US2758852A successfully refreshed from Google Patents.
US2758852A
Expired / Lapsed
US
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Coupling for threadless pipe with independent sealing and gripping means
Assignee: Dresser Industries Inc
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Filing: 1953-01-16
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Granted: 1956-08-14
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Expires: 1973-01-16
Abstract
No abstract record available.
Inventors
- 👤 Newell Frederick Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:36
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/08; F16L19/083; F16L19/086; F16L19/06; F16L19/075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1159845A
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US1646660A
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US1604580A
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US1743315A
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US1793455A
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US2021745A
Cited
US2460032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-14 | 1960-02-13 | 1960-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-14 | 1964-02-13 | 1964-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-14 | 1968-02-13 | 1968-08-14 | $7700.00 | Window Closed / Lapsed |