Patent US2689661A successfully refreshed from Google Patents.
US2689661A
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Dipper stick and dipper operating means
Assignee: Individual
•
Filing: 1951-10-25
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Granted: 1954-09-21
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Expires: 1971-10-25
Abstract
No abstract record available.
Inventors
- 👤 Daniel F Przybylski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:24
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/40; E02F3/413; E02F3/4135; B; B66; B66C; B66C3/00; B66C3/14; B66C3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1481336A
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US2223645A
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US2197989A
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US2465629A
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US2486479A
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US2594720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |