US3435908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articulated crawler tractor construction
Assignee: Caterpillar Inc
•
Filing: 1967-03-01
•
Granted: 1969-04-01
•
Expires: 1987-03-01
Abstract
No abstract record available.
Inventors
- 👤 Donald Edward Sunderlin
- 👤 Jacob Emor Staab
- 👤 Dorrance Oldenburg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:07
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; B62D53/062; B62D55/00; B62D55/06; B62D55/065; B62D55/0655; B62D55/08; B62D55/104; B62D55/116; E; E02; E02F; E02F9/00; E02F9/08; E02F9/0841
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1321774A
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US2219533A
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US2393324A
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US2519974A
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US2598863A
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US2673616A
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US3253671A
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US3299978A
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US3349863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-31 | 1972-09-30 | 1973-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-31 | 1976-09-30 | 1977-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-31 | 1980-09-30 | 1981-04-01 | $7700.00 | Window Closed / Lapsed |