US3474547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baffle apparatus for self-loading scrapers
Assignee: Caterpillar Inc
•
Filing: 1967-02-23
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Granted: 1969-10-28
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Expires: 1987-02-23
Abstract
No abstract record available.
Inventors
- 👤 Trevor G Campbell
- 👤 Larry G Eftefield
- 👤 Raymond L Moser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:53
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/657
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |