Patent US2986828A successfully refreshed from Google Patents.
US2986828A
Expired / Lapsed
US
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Combination scarifier-scraper
Assignee: Massey Ferguson Inc
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Filing: 1959-08-05
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Granted: 1961-06-06
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Expires: 1979-08-05
Abstract
No abstract record available.
Inventors
- 👤 Alvin W Lapins
- 👤 Brantford G Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:45
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/815; E02F3/8152; E02F3/7604; E02F3/7622
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
US2578131A
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US2611308A
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US2737868A
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US2840933A
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US2840935A
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US2839851A
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US2865117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |