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Patent US2720848A successfully refreshed from Google Patents.
US2720848A
Expired / Lapsed
US
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Snubbed railway truck
Assignee: Symington Gould Co
•
Filing: 1946-05-08
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Granted: 1955-10-18
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Expires: 1966-05-08
Abstract
No abstract record available.
Inventors
- 👤 Glenn F Couch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:58
CPC Classifications
B; B61; B61F; B61F5/00; B61F5/26; B61F5/30; B61F5/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1131884A
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US1725310A
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US2132382A
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US2197863A
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US2327151A
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US2333921A
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US2378229A
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US2355450A
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US2378414A
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US2365198A
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US2434838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |