Patent US3362489A successfully refreshed from Google Patents.
US3362489A
Expired / Lapsed
US
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Earth auger bifurcated point
Assignee: ALASKAUG Inc
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Filing: 1965-10-15
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Granted: 1968-01-09
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Expires: 1985-10-15
Abstract
No abstract record available.
Inventors
- 👤 Miller Robert William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:25
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; E21B10/627; E21B10/633
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US847455A
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US1706275A
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US2494188A
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US2990896A
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US3024856A
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US3271080A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |