Patent US493560A successfully refreshed from Google Patents.
US493560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for cleaning metal plates
Assignee: —
•
Filing: —
•
Granted: 1893-03-14
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Expires: 1910-03-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:32
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/135
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) | 1896-03-13 | 1896-09-12 | 1897-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1900-03-14 | 1900-09-13 | 1901-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1904-03-14 | 1904-09-13 | 1905-03-15 | $7700.00 | Window Closed / Lapsed |