US53226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved evaporator and cooler
Assignee: —
•
Filing: —
•
Granted: 1866-03-13
•
Expires: 1883-03-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:56
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/14
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) | 1869-03-12 | 1869-09-11 | 1870-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1873-03-12 | 1873-09-11 | 1874-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1877-03-12 | 1877-09-11 | 1878-03-13 | $7700.00 | Window Closed / Lapsed |