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US212023A
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US
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Assignee: —
•
Filing: —
•
Granted: 1879-02-04
•
Expires: 1896-02-04
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:06
CPC Classifications
B; B01; B01D; B01D39/00; B01D39/02; B01D39/06; B01D24/00; B01D24/007; B01D24/02; B01D24/10; B01D24/16; B01D2239/00; B01D2239/06; B01D2239/065
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) | 1882-02-03 | 1882-08-05 | 1883-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1886-02-03 | 1886-08-05 | 1887-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1890-02-03 | 1890-08-05 | 1891-02-04 | $7700.00 | Window Closed / Lapsed |