US759670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of copper ores.
Assignee: EDWARD BALTZLEY
•
Filing: 1902-09-10
•
Granted: 1904-05-10
•
Expires: 1922-09-10
Abstract
No abstract record available.
Inventors
- 👤 Ernest P Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:05
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0063; C22B15/0065; C22B15/0067; C22B15/0071
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) | 1907-05-10 | 1907-11-09 | 1908-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1911-05-10 | 1911-11-09 | 1912-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1915-05-10 | 1915-11-09 | 1916-05-10 | $7700.00 | Window Closed / Lapsed |