Patent DE544987C successfully refreshed from Google Patents.
DE544987C
Expired / Lapsed
DE
⏱️ 0.0 years remaining
Telegraph high-speed recorder based on the moving coil system with a damping device for the oscillating system
Assignee: Siemens and Halske AG
•
Filing: 1929-12-25
•
Granted: 1932-02-24
•
Expires: 1949-12-25
Abstract
No abstract record available.
Inventors
- 👤 Otto Roemer
Bibliographic Details
Application Number
—
Jurisdiction
DE
Data Source
google_patents
Last Synchronized
2026-11-06 20:15
CPC Classifications
H; H04; H04L; H04L15/00; H04L15/24; H04L15/28; H04L15/30
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.