FR877658A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Device of directed antennas for wide frequency bands
Assignee: Telefunken AG
•
Filing: 1941-12-11
•
Granted: 1942-12-14
•
Expires: 1961-12-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-24 14:01
CPC Classifications
C; C13; C13B; C13B5/00; C13B5/06; B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/24; B23Q35/26; B23Q35/30; B23Q35/32; B23Q5/00; B23Q5/54; C07; C07C; C07C51/00; C07C51/16; C07C51/305; C12; C12N; C12N1/00; C12N1/14; C12N1/16; C12N1/22; C13B5/08; D; D01; D01H; D01H5/00; D01H5/18; D01H5/60; G; G11; G11B; G11B5/00; G11B5/02; G11B5/027; G11B5/03; G11B5/74; H; H01; H01Q; H01Q19/00; H01Q19/10
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.