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Control device for apparatus for recording circulatory conditions
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Diagnostic and electrosurgical appliance
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Apparatus for recording respiratory and circulatory conditions
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Apparatus and method for ascertaining and recording conditions of the circulatory system
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Optical instrument
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Improvements in safety razors
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Electrically operated razor
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Optical instrument
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Optical instrument
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Safety razor
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Actuating mechanism for an electric safety razor
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Oscillatory motor for electrically operated safety razors
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Electro-mechanism for operating safety razors
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Oscillatory motor for electric safety razors
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Safety razor motor structure
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Optical apparatus
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Optical instrument
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Optical apparatus
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Optical apparatus
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