Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
Frequenzmesser oder -relais nach Patent 407309 mit zwei Schwingungsorganen verschiedener Eigenfrequenz, deren Schalldruecke entgegengesetzt auf den beweglichen Teil eines Schallstaerkemessers wirken
Fahrzeugelektronikmodul mit Filterschaltung, welche gemäß einer Pi- oder T-Schaltung spezifisch verschaltete Bauteile aufweist, sowie Verfahren zum Betreiben eines Fahrzeugelektronikmoduls