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US2519974A
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Tractor-implement supporting cradle
Assignee: Caterpillar Global Mining LLC
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Filing: 1947-06-19
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Granted: 1950-08-22
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Expires: 1967-06-19
Abstract
No abstract record available.
Inventors
- 👤 George W Mork
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:22
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/96; B; B66; B66C; B66C23/00; B66C23/18; B66C23/36; B66C23/44; E02F3/28; E02F3/34; E02F3/76; B66C2700/00; B66C2700/03; B66C2700/0321; B66C2700/0357
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2269775A
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US2274904A
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US2396407A
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US2376181A
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US2377495A
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US2426544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |