Patent US548490A successfully refreshed from Google Patents.
US548490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust-collector
Assignee: —
•
Filing: —
•
Granted: 1895-10-22
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Expires: 1912-10-22
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:26
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/14; B; B04; B04C; B04C5/00; B04C5/08; B04C5/103
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) | 1898-10-21 | 1899-04-22 | 1899-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1902-10-22 | 1903-04-23 | 1903-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1906-10-22 | 1907-04-23 | 1907-10-23 | $7700.00 | Window Closed / Lapsed |