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(11) | EP 0 320 631 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Universal key for opening doors from the inside and from the outside |
(57) The present invention relates to a universal key for opening doors from the inside
and from the outside which has the peculiarity of comprising a key body (2) insertable
in a lock and provided with a grip (5) and with a stem (6) with a radially protruding
ward (7). At the free end of said stem (6) there is a coupling member (20) for engagement
with a coupling tang (10) of an auxiliary grip element (11) which is accessible on
the opposite side of a lock with respect to the side of insertion of said key body
(2). |