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Phono pickup cartridge
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Patent number 4,519,063
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Issue date May 21, 1985
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Pioneer Electric Corporation
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Kazuo Nishikawa
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Phono pickup cartridge
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Patent number 4,437,179
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Issue date Mar 13, 1984
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Pioneer Electronic Corporation
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Kazuo Nishikawa
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G11 - INFORMATION STORAGE
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Electromagnetic pickup cartridge
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Patent number 4,352,176
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Issue date Sep 28, 1982
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Matsushita Electric Industrial Co., Ltd.
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Masashi Itoh
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Pickup device
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Patent number 4,344,167
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Issue date Aug 10, 1982
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Tadashi Iwasawa
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G11 - INFORMATION STORAGE
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Pick-up needle
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Patent number 4,342,107
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Issue date Jul 27, 1982
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Heinrich Zimmermann
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G11 - INFORMATION STORAGE
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Stereo phonograph cartridge
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Patent number 4,326,285
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Issue date Apr 20, 1982
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Micro-Acoustics Corporation
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Norman H. Dieter
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Pick-up
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Patent number 4,310,917
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Issue date Jan 12, 1982
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Ortofon Manufacturing A/S
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Bjarne S. Hansen
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Pickup cartridge
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Patent number 4,232,869
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Issue date Nov 11, 1980
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Matsushita Electric Industrial Co., Ltd.
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Takashi Wakabayashi
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Pickup
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Patent number 4,220,341
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Issue date Sep 2, 1980
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Ortofon Manufacturing A/S
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Hisayoshi Nakatsuka
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Pickup cartridge
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Patent number 4,205,856
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Issue date Jun 3, 1980
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Stax Industries Limited
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Ken Hayashi
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Phono cartridge
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Patent number 4,179,589
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Issue date Dec 18, 1979
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Kenkichi Tsukamoto
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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