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Patent US2679703A successfully refreshed from Google Patents.
US2679703A
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Rotary wheel ditching machine
Assignee: Individual
•
Filing: 1950-11-27
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Granted: 1954-06-01
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Expires: 1970-11-27
Abstract
No abstract record available.
Inventors
- 👤 Walter A Borel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:50
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/20; E02F3/186
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1155975A
Cited
US1424878A
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US1633850A
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US1577561A
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US2168866A
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US2152840A
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US2315007A
Cited
US2408459A
Cited
US2437059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |