Patent US2570179A successfully refreshed from Google Patents.
US2570179A
Expired / Lapsed
US
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Device for fluid flow between relatively moving objects
Assignee: Babcock and Wilcox Co
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Filing: 1947-05-07
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Granted: 1951-10-02
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Expires: 1967-05-07
Abstract
No abstract record available.
Inventors
- 👤 Rivers Heyward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:23
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/02; B65G45/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1125750A
Cited
US1192762A
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US1416668A
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US1628512A
Cited
GB300378A
Cited
US1933464A
Cited
GB501378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |