Patent US1381074A successfully refreshed from Google Patents.
DE548679C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for the production of metal-containing azo dyes
Assignee: Chemische Ind Ges
•
Filing: 1929-07-11
•
Granted: 1932-04-16
•
Expires: 1949-07-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-28 00:50
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B43/136; C09B43/16
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.