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Publication of FR570468ApublicationCriticalpatent/FR570468A/fr
H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
FR570468D1923-09-011923-09-01Cadre universel d'accord pour télégraphie et téléphonie sans fil
ExpiredFR570468A
(fr)