Patent US3427998A successfully refreshed from Google Patents.
US3427998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad car side wall
Assignee: Youngstown Steel Door Co
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Filing: 1966-06-28
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Granted: 1969-02-18
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Expires: 1986-06-28
Abstract
No abstract record available.
Inventors
- 👤 Thomas C Soddy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:35
CPC Classifications
B; B61; B61D; B61D17/00; B61D17/04; B61D17/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2610587A
Cited
US2601103A
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US2987014A
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US3089436A
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US2939406A
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US3071086A
Cited
US3161152A
Cited
US3251315A
Cited
US3347175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |