CH214025A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Method for the selective amplification of electron currents in two opposite directions.
Assignee: Fernseh Gmbh
•
Filing: 1940-04-08
•
Granted: —
•
Expires: 1960-04-08
Abstract
No abstract record available.
Inventors
- 👤 Fernseh G M B H
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-31 13:53
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04
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.