Patent US2995842A successfully refreshed from Google Patents.
US2995842A
Expired / Lapsed
US
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Ground aspirator for inland and deep sea dredging
Assignee: Individual
•
Filing: 1957-05-14
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Granted: 1961-08-15
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Expires: 1977-05-14
Abstract
No abstract record available.
Inventors
- 👤 Korste Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:27
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/88; E02F3/90; E02F3/92; E02F3/9243; E02F3/925; E02F3/9293
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US63661A
Cited
US95213A
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US491748A
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US508766A
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US543637A
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US780027A
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US842364A
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US909543A
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US1530654A
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US1964951A
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US2413561A
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US2599080A
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US2605090A
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US2774569A
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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) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |