Abstract: Systems, methods, apparatuses, and computer program products for a reusable license activation key are provided. One method includes creating, by a server, a registration record in a database upon activation of a license for a product, the registration record comprising an activation key for the license. The method may further include generating a new registration record comprising a new activation key when a change to the license occurs, generating a globally unique identifier for linking the registration record with the new registration record, and storing the linked registration records in the database.

Abstract: A method of cleaning pollen from mechanical impurities, spore and micro-organisms is based on the fact that dirty pollen (1) is sucked to air flow via an insulant sieve (2). Clean pollen (3) falls into a filter (6), dirt (5) sticks on the sieve (2). The pollen cleaning device consists of a sucking unit (7) with a filter (6), before which at least one sieve (2) with a throttle flap (8) is located.

Abstract: The basis of the pollen cleaning method is that the contaminated pollen (6) is sucked by airflow carrying the pollen to the conical part (16) of the separator (3) made of insulating material where pure pollen particles fall through the separator onto the filter (2) while the impurities rotate in electrostatic field generated by separator (3) friction. The device used for implementation of this method consists of a suction unit (1) with a filter (2). To the filter is led the separator outlet (3). In the area of the greatest separator diameter, the outlet of the suction line of a variable diameter is tangentially connected to the separator (3) including a suction part (5) for contaminated pollen (6) suction.