The invention relates to a device with a signal receiving unit for locating golf balls. Each golf ball is associated with a transmitting unit and the signals emitted by each transmitting unit are detected by the signal receiving unit. The transmitting unit is associated with an energy store as an operating...http://www.google.fr/patents/US5423549?utm_source=gb-gplus-shareBrevet US5423549 - Apparatus with a signal receiving unit for locating golf balls
Apparatus with a signal receiving unit for locating golf balls
