Patent JPS6284441A successfully refreshed from Google Patents.
Patent DE971389C successfully refreshed from Google Patents.
← Back to Patent Explorer
DE971389C Expired / Lapsed DE ⏱️ 0.0 years remaining

Process for the creation of double-entry centrifugal pump impellers of various outlet widths

Assignee: Siemens Corp
•
Filing: 1951-09-29
•
Granted: 1959-01-22
•
Expires: 1971-09-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Kurt Albrecht

Bibliographic Details

Application Number —
Jurisdiction DE
Data Source google_patents
Last Synchronized 2026-10-31 19:30
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/18; F04D29/22; F04D29/2205; F04D29/2222; F04D29/2211

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

DE78038C Cited
DE521245C Cited
DE173625C Cited
FR391413A Cited
DE381483C Cited
DE688886C Cited

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag