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US3001591A
Expired / Lapsed
US
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Ripper shank with wear plate
Assignee: DOUBLE J BREAKER Co
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Filing: 1958-10-06
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Granted: 1961-09-26
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Forrest A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:50
CPC Classifications
A; A01; A01B; A01B15/00; A01B15/02; A01B15/025; A01B35/00; A01B35/20; A01B35/22; A01B35/225
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US247148A
Cited
US296983A
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US534790A
Cited
US639904A
Cited
US916868A
Cited
US1287291A
Cited
US2876853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |