Sreekanth

The Delphion Integrated View |
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US2999136 -
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>>View Certificate of Correction for this patent (starts on page 8 of the main document) | |||||
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Holt Holt et al. | |||||
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1961-09
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381/323: ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES; HEARING AIDS, ELECTRICAL; Specified casing or housing; Power supply or programming interface terminals 351/119: OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING; SPECTACLES AND EYEGLASSES; Temples; Two-part type (e.g., jointed) 351/158: OPTICS: EYE EXAMINING, VISION TESTING AND CORRECTING; SPECTACLES AND EYEGLASSES; Combined 381/322: ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES; HEARING AIDS, ELECTRICAL; Specified casing or housing 381/327: ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES; HEARING AIDS, ELECTRICAL; Specified casing or housing; Spectacle 381/338: ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES; ELECTRO-ACOUSTIC AUDIO TRANSDUCER; Having acoustic wave modifying structure; With tubular waveguide or resonant element | |||||
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15 patents reference this one | |||||
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