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Patent US2852082A successfully refreshed from Google Patents.
US2852082A
Expired / Lapsed
US
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Mechanical rock picker
Assignee: BRUCE H PETERSEN
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Filing: 1955-03-29
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Granted: 1958-09-16
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Expires: 1975-03-29
Abstract
No abstract record available.
Inventors
- 👤 Merle W Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:47
CPC Classifications
A; A01; A01B; A01B43/00; E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/7695
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) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |