DE759535C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Fan impeller
Assignee: Siemens Schuckertwerke AG
•
Filing: 1939-04-19
•
Granted: 1953-01-19
•
Expires: 1959-04-19
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Dipl-Ing Feldmann
- 👤 Karl Dipl-Ing Hahn
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-07 14:57
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)
DE578128C
Cited
US1430561A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.