Patent FR890924A successfully refreshed from Google Patents.
FR890924A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Hollow tubular pipe for very short electrical waves
Assignee: Telefunken AG
•
Filing: 1943-02-10
•
Granted: 1944-02-22
•
Expires: 1963-02-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-26 12:20
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/12; H01P3/122
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.