Patent US772785A successfully refreshed from Google Patents.
Patent CH210447A successfully refreshed from Google Patents.
CH210447A
Expired / Lapsed
CH
⏱️ 0.0 years remaining
Procedure and arrangement for frequency division.
Assignee: Fernseh Ag
•
Filing: 1938-12-15
•
Granted: —
•
Expires: 1958-12-15
Abstract
No abstract record available.
Inventors
- 👤 Fernseh Aktiengesellschaft
Bibliographic Details
Application Number
—
Jurisdiction
CH
Data Source
google_patents
Last Synchronized
2026-10-30 11:42
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/02; H04J3/04; H04J3/042; H03; H03B; H03B19/00; H04N; H04N5/00; H04N5/04; H04N5/06
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.