4. Electricity: conductors and insulators
  5. Insulators
  6. Special application

HD Electric Company

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Corporate Assignee

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Digital voltage indicator

Measuring – testing – or signalling instruments – Measuring – regulating or indicating instrument – or casing – Electrical property
Design Patent

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Hanging ammeter with removable battery cartridge

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With coupling means
Patent

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High-resistance probe and voltage detector incorporating same

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – With probe – prod or terminals
Reexamination Certificate

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High-voltage indicating apparatus and method

Electricity: measuring and testing – Testing potential in specific environment – Voltage probe
Reexamination Certificate

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Jacket for cable connector

Electricity: conductors and insulators – Insulators – Special application
Patent

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Profile ID: LFUS-PAI-P-424769

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