4. Measuring, testing, or signalling instruments
  5. Security or signal instrument or casing
  6. Visual

Donald C. Pretsch, Jr.

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Free-standing gauge

Measuring – testing – or signalling instruments – Security or signal instrument or casing – Visual
Patent

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Retaining bracket for carpenter's square

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

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Vehicle mounted backing distance gauge

Geometrical instruments – Straight-line light ray type – Alignment device
Patent

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Profile ID: LFUS-PAI-P-1769299

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