Patent US19645A successfully refreshed from Google Patents.
US19645A
Expired / Lapsed
US
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Improvement in picture-types
Assignee: —
•
Filing: —
•
Granted: 1858-03-16
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Expires: 1875-03-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:38
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/16; B41N1/20
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) | 1861-03-15 | 1861-09-14 | 1862-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1865-03-15 | 1865-09-14 | 1866-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1869-03-15 | 1869-09-14 | 1870-03-16 | $7700.00 | Window Closed / Lapsed |