US2573108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rail truck suspension
Assignee: Transit Research Corp
•
Filing: 1947-07-03
•
Granted: 1951-10-30
•
Expires: 1967-07-03
Abstract
No abstract record available.
Inventors
- 👤 Emil H Piron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:16
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/02; B61F5/04; B61F5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1825093A
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US2061767A
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GB432304A
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US2039759A
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US2207848A
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US2113964A
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US2165702A
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US2201861A
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US2231848A
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US2260508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |