配方

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INKS

Typewriter Ribbon Ink (U.S. Patent 2,160,511)

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Erasable Drawing Ink (U.S. Patent 2,833,736)

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Photographic film Marking Ink (U.S. Patent 2,879,168)

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Hard Finish Marking Ink (U.S. Patent 2,836,573)

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Nontoxic Laundry Marking Ink

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Improved Hectograph Solvent (U.S. Patent 2,862,444)

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Hectograph Ink Base (Black) (U.S. Patent 2,752,254)

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hectograph Ink (U.S. Patent 824,812)

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Duplicating Fluid

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INKS

Hectograph Transfer Sheet (U.S. Patent 2,748,024)