DE399243C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Control arrangement for DC machines
Assignee: Siemens Schuckertwerke AG
•
Filing: 1922-12-24
•
Granted: 1924-08-06
•
Expires: 1942-12-24
Abstract
No abstract record available.
Inventors
- 👤 Dipl-Ing Carl Roeren
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-10-31 22:27
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/26
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.