4. Geometrical instruments

James B. Randolph

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Interchangeable cassette for stringed instruments

Music – Instruments – Electrical musical tone generation
Patent

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Multiple arc welding device and method

Electric heating – Metal heating – Of cylinders
Patent

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Semiconductor module circuit interconnection system

Geometrical instruments
Patent

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Shielding apparatus

Electric heating – Metal heating – Nonatmospheric environment at hot spot
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Profile ID: LFUS-PAI-P-1005900

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