Patent US2591233A successfully refreshed from Google Patents.
US2591233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth auger
Assignee: Individual
•
Filing: 1947-01-21
•
Granted: 1952-04-01
•
Expires: 1967-01-21
Abstract
No abstract record available.
Inventors
- 👤 Kenneth J Browne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:12
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/44
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1116154A
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US1789399A
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US1990341A
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US2107958A
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US2221680A
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US2320612A
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US2453204A
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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) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |