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Cable closing
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Patent number 4,767,893
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Issue date Aug 30, 1988
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Minnesota Mining and Manufacturing Company
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James H. Ball
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Cable branch-off sealing member
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Patent number 4,594,755
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Issue date Jun 17, 1986
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Minnesota Mining and Manufacturing Company
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James H. Ball
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Buried cable splice closure
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Patent number 4,554,401
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Issue date Nov 19, 1985
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Minnesota Mining and Manufacturing Company
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James H. Ball
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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