DE826089C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Air filters for internal combustion engines, especially for vehicle engines
Assignee: ALFRED HONSEL NIETEN U METALLW
•
Filing: 1950-05-14
•
Granted: 1951-12-27
•
Expires: 1970-05-14
Abstract
No abstract record available.
Inventors
- 👤 Heinz Weigand
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-29 16:18
CPC Classifications
F; F02; F02M; F02M35/00; F02M35/02; F02M35/04
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.