| 摘要 |
<p>There is disclosed a device applicable to a commercial product to control the origin of the product. The device consists of a sealed envelope (1) attached to the product in a separable way and containing therein a pre-established code (6) assigned to that product by the producer. A front face (7) of the envelope bearing the producer or the main distributor name and address (8) and a back face (11) of the envelope bearing a space (13) for the name and address of the consumer and a space (12) for an identification stamp or pre-printed inscription of the final retailer.</p> |
