US2775472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for flanged joints
Assignee: Individual
•
Filing: 1952-11-14
•
Granted: 1956-12-25
•
Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 Cicero C Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:35
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/16; F16L23/18; F16L23/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1914472A
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US2054336A
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US2254752A
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US2178700A
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US2400254A
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US2617485A
Cited
US2567479A
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US2532662A
Cited
US2533868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |