4. Organic compounds -- part of the class 532-570 series
  5. Organic compounds
  6. Amino nitrogen containing

John R. Fritch

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Landscape edging apparatus and method

Plant husbandry – Ornamental beds
Patent

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Landscape edging apparatus and method

Plant husbandry – Ornamental beds
Patent

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Landscape edging apparatus and method

Plant husbandry – Ornamental beds
Patent

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Process for preparing pyridine and quinoline derivatives

Organic compounds -- part of the class 532-570 series – Organic compounds – Nitriles
Patent

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Process for preparing pyridinecarboxylic acid derivatives

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