4. Electricity: circuit makers and breakers
  5. Liquid contact
  6. Time delay

Robert J. Johnston

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Coal-based organic growth compound

Plant husbandry – Process
Reexamination Certificate

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Coal-based organic growth compound

Chemistry: fertilizers – Processes and products – Organic material-containing
Reexamination Certificate

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Convertible momentary/maintained electric switch

Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent

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Convertible selector switch

Electricity: circuit makers and breakers – Multiple circuit control – Combined pivoted and reciprocating contact
Patent

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Convertible switch operator

Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent

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Profile ID: LFUS-PAI-P-427586

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