| 摘要 |
Apparatus with ultrasonic emission for putting to flight vermin underground or in the open air, such as rodents or certain birds, characterised in that it is extended by a hollow piece 2 having a dual function, the first being that of an emitting antenna improving the diffusion of the ultrasonic waves from the emitter, and the second, via its end 2% in the form of a spike, being that of acting as a stake. <IMAGE>
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