Patent US4787399A successfully refreshed from Google Patents.
DE910243C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Filter device for dust-laden gases
Assignee: Individual
•
Filing: 1950-12-12
•
Granted: 1954-04-29
•
Expires: 1970-12-12
Abstract
No abstract record available.
Inventors
- 👤 Paul Rene De Permentier
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-24 23:50
CPC Classifications
B; B01; B01D; B01D45/00; B01D45/04; B01D45/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.