| http://www.w3.org/ns/prov#value | - An endoscopic attachment to a surgical laser, comprising: a hollow endoscopic tube; a coupling device for coupling, to one end of the hollow endoscopic tube constituting its rear end, a surgical laser producing both a working laser beam and a separate, visible, aiming laser beam, such as to permit both laser beams to pass through the endoscopic tube onto a working area at the opposite end of the e
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