John W. Harper

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Combination ceiling light and vent grille

Lighting – Light fixture – Combined with diverse article
Patent

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Patient restraining strap for scintiphotography

Radiant energy – Luminophor irradiation
Patent

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Portable field control unit for emergency telephone communicatio

Patent

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Selective shielding device for scintiphotography

Radiant energy – Radiation controlling means – Shields
Patent

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Profile ID: LFUS-PAI-P-403872

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