Patent US2051958A successfully refreshed from Google Patents.
Patent US958565A successfully refreshed from Google Patents.
US958565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for separating gravel from sand, &c.
Assignee: Individual
•
Filing: 1910-02-28
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Granted: 1910-05-17
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Expires: 1930-02-28
Abstract
No abstract record available.
Inventors
- 👤 Carsten E Torjusen
- 👤 William Idstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:48
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/18; B07B1/22; B07B1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1913-05-16 | 1913-11-15 | 1914-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-05-16 | 1917-11-15 | 1918-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-05-16 | 1921-11-15 | 1922-05-17 | $7700.00 | Window Closed / Lapsed |