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Work-light
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Patent number 4,477,863
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Issue date Oct 16, 1984
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Alfred Walz
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F21 - LIGHTING
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Ultrasonic transmitter
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Patent number 4,353,123
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Issue date Oct 5, 1982
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Siemens Aktiengesellschaft
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Helmut Rost
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B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
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Apparatus for object scanning
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Patent number 4,306,458
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Issue date Dec 22, 1981
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Siemens Aktiengesellschaft
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Arthur Weyns
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Ultrasonic imaging apparatus
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Patent number 4,257,270
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Issue date Mar 24, 1981
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Siemens Aktiengesellschaft
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Alfred Walz
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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