DE515865C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Transformer with windings enclosed in an iron jacket for electroacoustic purposes
Assignee: Siemens and Halske AG
•
Filing: —
•
Granted: 1931-01-15
•
Expires: 1948-01-15
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/10
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.