Patent US3393150A successfully refreshed from Google Patents.
Patent DE377196C successfully refreshed from Google Patents.
DE377196C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Device to prevent harmful gas flows which make it difficult to remove impurities by means of centrifugal force in rapidly rotating drums
Assignee: FRANZ XAVER GEHRING
•
Filing: —
•
Granted: 1923-06-12
•
Expires: 1940-06-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-28 06:03
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/12; B01D45/14
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.