US654867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing etching-grounds.
Assignee: Individual
•
Filing: 1897-11-15
•
Granted: 1900-07-31
•
Expires: 1917-11-15
Abstract
No abstract record available.
Inventors
- 👤 John Baker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:26
CPC Classifications
H; H10; H10P; H10P95/00; G; G03; G03F; G03F7/00; G03F7/0002
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) | 1903-07-31 | 1904-01-30 | 1904-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1907-07-31 | 1908-01-30 | 1908-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1911-07-31 | 1912-01-30 | 1912-07-31 | $7700.00 | Window Closed / Lapsed |