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Patent US2724518A successfully refreshed from Google Patents.
US2724518A
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Power dipper construction
Assignee: Individual
•
Filing: 1950-07-29
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Granted: 1955-11-22
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Expires: 1970-07-29
Abstract
No abstract record available.
Inventors
- 👤 Edward J Charlton
- 👤 Pompa Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:02
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2048561A
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US857577A
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US1582577A
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US1813864A
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US1974458A
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US2025090A
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US1989818A
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US2034854A
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US2180348A
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US2107342A
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US2350762A
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US2336729A
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US2427897A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |