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US2969878A
Expired / Lapsed
US
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Belt type solid separator
Assignee: Denver Equipment Co
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Filing: 1954-08-09
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Granted: 1961-01-31
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 Jr John H V Finney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:09
CPC Classifications
B; B01; B01D; B01D21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US781787A
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US2129853A
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US2102652A
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US2179187A
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US2314294A
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US2169625A
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US2264332A
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US2417477A
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US2707047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |