Patent ID: 8686856

Claim:
An anti-theft device for containers of fluid products comprising: a container for fluid products; a support element ( 3 ) connected to said container ( 2 ); a closure member ( 11 ) irremovably attached to said container ( 2 ); and a circuit ( 7 ) housed in said support element ( 3 ) to receive an enquiry signal (S 1 ) and to generate a corresponding response signal (S 2 ); wherein said support element ( 3 ) is interposed between said container ( 2 ) and said closure member ( 11 ), wherein said circuit ( 7 ) comprises at least one first and one second portion ( 7 a , 7 b ), wherein said first portion ( 7 a ) is an elongated element extending into said support element ( 3 ) and said second portion ( 7 b ) is a conductive element ( 11 a ) of said closure member ( 11 ), said first and second portions ( 7 a , 7 b ) being in mutual electrical contact when said closure member ( 11 ) is connected to said container ( 2 ) and being in a condition of mutual non-electrical contact or isolation when said closure member ( 11 ) is at least partially disconnected from said container ( 2 ).