US976923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank for settling, filtering, and collecting solids from liquids.
Assignee: Colorado Iron Works Co
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Filing: 1909-06-17
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Granted: 1910-11-29
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Expires: 1929-06-17
Abstract
No abstract record available.
Inventors
- 👤 John Edward Rothwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:45
CPC Classifications
B; B01; B01D; B01D21/00; B01D21/0012
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) | 1913-11-28 | 1914-05-30 | 1914-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-11-28 | 1918-05-30 | 1918-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-11-28 | 1922-05-30 | 1922-11-29 | $7700.00 | Window Closed / Lapsed |