Patent US320985A successfully refreshed from Google Patents.
US320985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
thomson
Assignee: —
•
Filing: —
•
Granted: 1885-06-30
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Expires: 1902-06-30
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:11
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/114; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245; Y10T137/4252; Y10T137/794; Y10T137/7976; Y10T137/8013
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) | 1888-06-29 | 1888-12-29 | 1889-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1892-06-29 | 1892-12-29 | 1893-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1896-06-29 | 1896-12-29 | 1897-06-30 | $7700.00 | Window Closed / Lapsed |