DE685979C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Screw fan wheel with blades with a wing profile
Assignee: Svenska Flaktfabriken AB
•
Filing: 1936-07-02
•
Granted: 1939-12-29
•
Expires: 1956-07-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-05 07:02
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/34
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.