US2930332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway box cars and doors therefor
Assignee: Youngstown Steel Door Co
•
Filing: 1956-10-18
•
Granted: 1960-03-29
•
Expires: 1976-10-18
Abstract
No abstract record available.
Inventors
- 👤 Earl W Cook
- 👤 Wilfred A Beauchamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:37
CPC Classifications
B; B61; B61D; B61D19/00; B61D19/003; B61D19/009
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US304222A
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US1303984A
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US841378A
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US2114754A
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US2154951A
Cited
US2243113A
Cited
US2223667A
Cited
US2320216A
Cited
US2680268A
Cited
US2764784A
Cited
US2756694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |