Patent US2984023A successfully refreshed from Google Patents.
US2984023A
Expired / Lapsed
US
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Rotary wheel ditching machine
Assignee: Individual
•
Filing: 1958-11-28
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Granted: 1961-05-16
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Dugas Clet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:49
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/186; E02F3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323051A
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US1348003A
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US1029456A
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US1128246A
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US1208381A
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US1361638A
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US1409772A
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US1456816A
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US1852200A
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US2490688A
Cited
US2679703A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |