Patent US2511335A successfully refreshed from Google Patents.
US2511335A
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US
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Steam connection between railway cars
Assignee: BROCKWAY Co
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Filing: 1947-08-12
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Granted: 1950-06-13
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Expires: 1967-08-12
Abstract
No abstract record available.
Inventors
- 👤 Guarnaschelli Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:03
CPC Classifications
B; B61; B61G; B61G5/00; B61G5/06; B61G5/08; F; F16; F16L; F16L33/00; F16L33/26
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) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |