Patent US2703044A successfully refreshed from Google Patents.
US2703044A
Expired / Lapsed
US
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Digger apparatus
Assignee: Individual
•
Filing: 1949-01-14
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Granted: 1955-03-01
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Expires: 1969-01-14
Abstract
No abstract record available.
Inventors
- 👤 Charles R Adair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:17
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; A; A01; A01B; A01B13/00; A01B13/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US326462A
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US1095404A
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US1190055A
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US1205416A
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US1509499A
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US1641032A
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US1938952A
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US1840126A
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US1894516A
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US1909752A
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US2295458A
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US2322115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |