Patent NL33472C successfully refreshed from Google Patents.
US741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Improved process for gilding copper,, brass
Assignee: —
•
Filing: —
•
Granted: 1838-05-17
•
Expires: 1855-05-17
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:54
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/36
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1841-05-16 | 1841-11-15 | 1842-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1845-05-16 | 1845-11-15 | 1846-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1849-05-16 | 1849-11-15 | 1850-05-17 | $7700.00 | Window Closed / Lapsed |