US3434738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull coupling for tractor-scraper units
Assignee: Caterpillar Inc
•
Filing: 1967-06-01
•
Granted: 1969-03-25
•
Expires: 1987-06-01
Abstract
No abstract record available.
Inventors
- 👤 Trevor G Campbell
- 👤 Lawrence P Coogan
- 👤 Yoshimi Hosoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:32
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/01; B60D1/04; B62; B62D; B62D49/00; B62D49/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1807379A
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US2529159A
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US2674815A
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US2587208A
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US2788999A
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US2986827A
Cited
US3079176A
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US3243203A
Cited
US3290806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-24 | 1972-09-23 | 1973-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-24 | 1976-09-23 | 1977-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-24 | 1980-09-23 | 1981-03-25 | $7700.00 | Window Closed / Lapsed |