Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
Inventor
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Photochromic assembly and manufacture of this assembly
Photochromic assembly comprising photochromic glass beads in pol
Photochromic paint
Photographic material and a process for its manufacture
Process for the preparation of photographic materials
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Profile ID: LFUS-PAI-P-241353