US3020858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road-rail vehicle
Assignee: Caterpillar Global Mining LLC
•
Filing: 1957-10-08
•
Granted: 1962-02-13
•
Expires: 1977-10-08
Abstract
No abstract record available.
Inventors
- 👤 Origen S Perkins
- 👤 Melvin R Krueger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:00
CPC Classifications
B; B60; B60F; B60F1/00; B60F1/04; B60F1/043; B61; B61D; B61D15/00; B61D15/02; B66; B66C; B66C23/00; B66C23/62; B66C23/72; B66C23/78; B66C23/80; B60F2301/00; B60F2301/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA528037A
Cited
US1727114A
Cited
US1906109A
Cited
US2304622A
Cited
US2482564A
Cited
US2630766A
Cited
FR978113A
Cited
US2681231A
Cited
US2808289A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |