4. Organic compounds -- part of the class 532-570 series
  5. Organic compounds
  6. Four or more ring nitrogens in the bicyclo ring system

Jean L. Pozzo

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Heterocyclic chromenes

Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
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Ophthalmic lenses with heterocyclic chromene compounds

Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
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Ring spiro [fluorene-[2H]-benzopyranes] and their use in ophthal

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
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Profile ID: LFUS-PAI-P-403116

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