4. Geometrical instruments
  5. Straightedge type
  6. Plural straightedges nonadjustably fixed at right angles

Howard Marcus

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

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Combination square

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

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Method and system for directed documentation of construction...

Data processing: financial – business practice – management – or co – Automated electrical financial or business practice or... – Business documentation
Reexamination Certificate

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