US2520845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snubbed truck
Assignee: American Steel Foundries
•
Filing: 1945-02-03
•
Granted: 1950-08-29
•
Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Leo A Lehrman
- 👤 Herbert J Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:26
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)
US2141680A
Cited
US2216231A
Cited
US2257109A
Cited
US2366973A
Cited
US2370107A
Cited
US2378415A
Cited
US2424936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |