4. Office supplies; artists and teachers materials
  5. Office equipment not elsewhere specified
  6. Holder or file

William M. Robbins

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Index card box

Office supplies; artists and teachers materials – Office equipment not elsewhere specified – Holder or file
Patent

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Multi-spectral filter

Optical: systems and elements – Light interference – Produced by coating or lamina
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Photocell array with multi-spectral filter

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
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Zero byte address linked list

Multiplex communications – Wide area network – Packet switching
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Profile ID: LFUS-PAI-P-927825

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