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Drafting tool

Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles
Patent

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Drafting tool

Geometrical instruments – Straightedge type – Rules
Reexamination Certificate

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Draughting tables, drawing boards, drawing instruments and analo

Geometrical instruments – Straightedge type
Patent

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Drawing aid

Geometrical instruments – Straightedge type
Patent

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Drawing apparatus

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing board

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing board

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing board apparatus

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing board assembly

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing head

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing head for a drawing machine

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing instrument

Geometrical instruments – Straightedge type – With means for moving straightedge over a surface
Patent

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Drawing instrument

Geometrical instruments – Straightedge type – Plural straightedges – relatively moveable
Patent

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Drawing instrument

Geometrical instruments – Straightedge type
Patent

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Drawing instrument and locking apparatus therefor

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing instruments

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing machine carrriage

Geometrical instruments – Straightedge type – Base attached
Patent

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Drawing triangle

Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles
Patent

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Drawing triangle and/or protractor, in particular for blackboard

Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles
Patent

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Drywall T-square

Geometrical instruments – Straightedge type – Plural straightedges nonadjustably fixed at right angles
Reexamination Certificate

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