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Acoustic coupler
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Patent number D272345
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Issue date Jan 24, 1984
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Novation, Inc.
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Bayard F. Kessler
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D14 - Recording, communication, or information retrieval equipment
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Electronic package
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Patent number D264583
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Issue date May 25, 1982
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Novation, Inc.
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Bayard F. Kessler
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D13 - Equipment for production, distribution, or transformation of energy
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Acoustic modem
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Patent number D264337
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Issue date May 11, 1982
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Novation, Inc.
-
Bayard F. Kessler
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D14 - Recording, communication, or information retrieval equipment