Patent CH284885A successfully refreshed from Google Patents.
CH284885A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Impeller for centrifugal fan.
Assignee: Escher Wyss Ag
•
Filing: 1950-10-17
•
Granted: —
•
Expires: 1970-10-17
Abstract
No abstract record available.
Inventors
- 👤 Aktiengesellschaft Escher Wyss
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-31 07:25
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/26; F04D29/28; F04D29/284
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.