Patent US2608311A successfully refreshed from Google Patents.
US2608311A
Expired / Lapsed
US
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Car unloading apparatus
Assignee: Dominion Bridge Co Ltd
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Filing: 1946-11-29
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Granted: 1952-08-26
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Expires: 1966-11-29
Abstract
No abstract record available.
Inventors
- 👤 Reginald H Findlay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:17
CPC Classifications
B; B65; B65G; B65G67/00; B65G2814/00; B65G2814/03; B65G2814/0347; B65G2814/0356; B65G2814/0359; B65G2814/0379; B65G2814/0392; B65G2814/0395
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1268580A
Cited
US1457186A
Cited
US1446303A
Cited
GB299199A
Cited
US1767013A
Cited
US1793622A
Cited
US1938027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |