US2821149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway truck and body assembly
Assignee: General Steel Castings Corp
•
Filing: 1953-04-24
•
Granted: 1958-01-28
•
Expires: 1973-04-24
Abstract
No abstract record available.
Inventors
- 👤 James C Travilla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:51
CPC Classifications
B; B61; B61F; B61F3/00; B61F3/02; B61F3/08; B61F3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US975303A
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US1097800A
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US1498046A
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US1776079A
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US1895500A
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US2252382A
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US2469513A
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US2636450A
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US2632405A
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US2705924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |