4. Synthetic resins or natural rubbers -- part of the class 520 ser
  5. Synthetic resins
  6. Polymers from only ethylenic monomers or processes of...

Evelyn Fischer

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Photochromic composition

Radiation imagery chemistry: process – composition – or product th – Dye image from radiation sensitive dye or dye former by dry... – Composition or product
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Photochromic compounds, a process for their preparation, and the

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
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Photochromic naphthacenequinones, process for their preparation

Organic compounds -- part of the class 532-570 series – Organic compounds – Tetracyclo naphthacene configured ring system having at...
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Photochromic naphthacenequinones, process for their preparation

Organic compounds -- part of the class 532-570 series – Organic compounds – Tetracyclo naphthacene configured ring system having at...
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Photochromic naphthacenequinones, process for their preparation

Organic compounds -- part of the class 532-570 series – Organic compounds – Tetracyclo naphthacene configured ring system having at...
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