Patent FR868429A successfully refreshed from Google Patents.
FR868429A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Method and device for electrically purifying gases or gas mixtures
Assignee: Siemens Lurgi Cottrell Elektrofilter GmbH
•
Filing: 1940-12-27
•
Granted: 1941-12-30
•
Expires: 1960-12-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-28 14:13
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/02; B03C3/04; B03C3/12
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.