Patent US2242604A successfully refreshed from Google Patents.
US83389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thomas w
Assignee: —
•
Filing: —
•
Granted: 1868-10-27
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Expires: 1885-10-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:16
CPC Classifications
B; B01; B01D; B01D11/00; B01D11/02; B01D11/0215; B01D11/0223; B01D11/023
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) | 1871-10-27 | 1872-04-27 | 1872-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1875-10-27 | 1876-04-27 | 1876-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1879-10-27 | 1880-04-27 | 1880-10-27 | $7700.00 | Window Closed / Lapsed |