Patent DE448662C successfully refreshed from Google Patents.
DE448662C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Process for increasing the delivery capacity of a delivery device consisting of a motor and pump and sunk into a borehole
Assignee: Siemens Schuckertwerke AG
•
Filing: 1925-05-05
•
Granted: 1927-08-25
•
Expires: 1945-05-05
Abstract
No abstract record available.
Inventors
- 👤 Victor Gutmann
- 👤 Dipl-Ing Ludwig Steiner
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-03 18:31
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/086; F04D13/00; F04D13/02; F04D13/06; F04D13/08; F04D13/10
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.