Fiber optic communication systems and parts therefor consisting of modems, ring managers, interfaces, transceivers, receivers, channel extenders, and optical fiber communications links; electro-optical switching devices, namely, switcher; optical fibers, optical apparatus and instruments, namely, cameras, magnifying glasses; optical lenses and optical discs

'apparatus':33 'camera':37 'channel':16 'communic':3,21 'consist':8 'devic':27 'disc':44 'electro':24 'electro-opt':23 'extend':17 'fiber':1,20,31 'glass':39 'instrument':35 'interfac':13 'lens':41 'link':22 'magnifi':38 'manag':12 'modem':10 'name':28,36 'optic':2,19,25,30,32,40,43 'part':6 'receiv':15 'ring':11 'switch':26 'switcher':29 'system':4 'therefor':7 'transceiv':14

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