Patent DE443453C successfully refreshed from Google Patents.
DE443453C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Control device for the stopper doors of chamber furnaces for the production of gas and coke
Assignee: G WOLFF JR MASCHF
•
Filing: 1925-11-03
•
Granted: 1927-04-29
•
Expires: 1945-11-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-09 06:31
CPC Classifications
C; C10; C10B; C10B25/00; C10B25/02; C10B25/08; C10B25/14
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.