US845606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of hardening copper.
Assignee: EMMETT JEFFERSON ANDERSON
•
Filing: 1906-03-29
•
Granted: 1907-02-26
•
Expires: 1926-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rosemond T Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:12
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/08; H; H10; H10W; H10W70/00; H10W70/01; H10W70/05
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) | 1910-02-25 | 1910-08-27 | 1911-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1914-02-25 | 1914-08-27 | 1915-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1918-02-25 | 1918-08-27 | 1919-02-26 | $7700.00 | Window Closed / Lapsed |