US2697420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expansion linkage for tubular members
Assignee: Babcock and Wilcox Co
•
Filing: 1950-07-12
•
Granted: 1954-12-21
•
Expires: 1970-07-12
Abstract
No abstract record available.
Inventors
- 👤 Russell G Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:03
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/16; F16L3/20; F22; F22B; F22B37/00; F22B37/02; F22B37/10; F22B37/20; F22B37/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1604734A
Cited
US1802750A
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US1990058A
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US2088724A
Cited
US2560063A
Cited
US2636351A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |