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Ellipsograph as a drafting tool

Geometrical instruments – Scriber – Curved line
Patent

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Ellipsograph capable of drawing dotted line

Geometrical instruments – Scriber – Curved line
Patent

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Ellipsograph drafting apparatus

Geometrical instruments – Scriber – Curved line
Patent

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Ellipsograph structure

Geometrical instruments – Scriber – Curved line
Patent

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Engraver's template

Geometrical instruments – Scriber – Pantographic
Patent

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Engraving dial for inside ring engraving machine

Geometrical instruments – Scriber
Reexamination Certificate

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Engraving head for apparatus for engraving printing cylinders

Geometrical instruments – Scriber
Patent

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Engraving machine

Geometrical instruments – Scriber – Curved surface
Patent

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Engraving machine

Geometrical instruments – Scriber – Pantographic
Patent

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Engraving machine for rings and bangle bracelets

Geometrical instruments – Scriber – Pantographic
Patent

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Engraving machines

Geometrical instruments – Scriber – Pantographic
Patent

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Engraving tool depth control nosepiece for enhancing line...

Geometrical instruments – Scriber
Reexamination Certificate

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Eyeglass frame and lens tracing apparatus and method

Geometrical instruments – Scriber – Curved line
Reexamination Certificate

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Eyeglass frame measurement apparatus

Geometrical instruments – Scriber – Curved line
Reexamination Certificate

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Eyeglasses frame tracing device

Geometrical instruments – Scriber – Curved line
Patent

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