US3474548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-loading scraper having a pivotal elevator and movable floor portion for unloading
Assignee: Caterpillar Inc
•
Filing: 1967-07-11
•
Granted: 1969-10-28
•
Expires: 1987-07-11
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:58
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/64; E02F3/65; E02F3/654; E02F3/655; E02F3/6454; E02F3/6481; E02F3/656
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2464098A
Cited
US2791044A
Cited
US3090139A
Cited
US3210868A
Cited
US3274711A
Cited
US3308565A
Cited
US3331149A
Cited
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 |