4. Organic compounds -- part of the class 532-570 series
  5. Organic compounds
  6. Heterocyclic carbon compounds containing a hetero ring...

Bei Wang

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Binding machine

Buckles – buttons – clasps – etc. – Strap tighteners – Accordion straps
Reexamination Certificate

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Binding strap with tightener

Bleaching and dyeing; fluid treatment and chemical modification – Treatment of hides – skins – feathers and animal tissues – Tanning
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Efficient synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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Efficient synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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Efficient synthesis of 4,5-dihydro-pyrazolo[3,4-c]pyrid-2-ones

Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate

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