| 摘要 |
<p>The packaging may take the form of a gift box (1) made from semi rigid material which has a lid (2) secured by a lock (3). After a preset time a programmable clock (4) operates an electric motor (7) to remove a bolt (5) from a latch (6) such that the lock may be opened. Alternatively the clock may provide visual data which enables a combination lock to be opened</p> |
