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Patent US2558130A successfully refreshed from Google Patents.
US2558130A
Expired / Lapsed
US
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Railway car door supporting mechanism
Assignee: Individual
•
Filing: 1946-04-19
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Granted: 1951-06-26
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Expires: 1966-04-19
Abstract
No abstract record available.
Inventors
- 👤 Ernest G Goodwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:29
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/001; B61D19/002; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043
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) | 1954-06-25 | 1954-12-25 | 1955-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-06-25 | 1958-12-25 | 1959-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-06-25 | 1962-12-25 | 1963-06-26 | $7700.00 | Window Closed / Lapsed |