4. Tools and hardware
  5. Locking or closing device

David C. Guthrie

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Gate operator safety system

Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate

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Keyless lock

Tools and hardware – Locking or closing device
Patent

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Switch unit for a garage door operator or the like

Equipment for production – distribution – or transformation of ene – Distribution – modification or control – Switch or casing therefor
Patent

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Profile ID: LFUS-PAI-P-1028010

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