Patent US1291202A successfully refreshed from Google Patents.
DE16309C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the extraction of precious metals from copper ores in the Bessemer converter
Assignee: Individual
•
Filing: 1881-03-26
•
Granted: 1881-12-06
•
Expires: 1901-03-26
Abstract
No abstract record available.
Inventors
- 👤 P Manhes
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-28 05:29
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0026; C22B15/0054; C22B11/00; C22B11/02; C22B15/0028; C22B15/003; C22B15/0041
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
Maintenance schedule is calculated for granted US utility patents.