| http://www.w3.org/ns/prov#value | - Brevetto US4623776 - Ring of light laser optics system - Google BrevettiRicerca Immagini Maps Play YouTube News Gmail Drive Altro ??Accedi Ricerca brevetti avanzata BrevettiThis invention provides a simplified laser optics system for generating a ring-shaped beam of laser radiation which is used for contouring and severing a curved, particularly a dome-shaped, article such as a silicone elastomer
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