Patent US4221904A successfully refreshed from Google Patents.
US293335A
Expired / Lapsed
US
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Vacuum press peecolatob
Assignee: —
•
Filing: —
•
Granted: 1884-02-12
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Expires: 1901-02-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:44
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/31; B01D29/35; B01D2201/00; B01D2201/20; B01D2201/204
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) | 1887-02-11 | 1887-08-13 | 1888-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1891-02-11 | 1891-08-13 | 1892-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1895-02-11 | 1895-08-13 | 1896-02-12 | $7700.00 | Window Closed / Lapsed |