US2717558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Car truck
Assignee: NAT MALIEABLE AND STEEL CASTIN
•
Filing: 1950-05-04
•
Granted: 1955-09-13
•
Expires: 1970-05-04
Abstract
No abstract record available.
Inventors
- 👤 James A Shafer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:12
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/12; B61F5/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1277802A
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US1414957A
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US1637928A
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US1679811A
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US1779526A
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US1941159A
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US2066602A
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US2021167A
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US2406199A
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US2435384A
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US2497460A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |