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

John W. Walter

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A.C. bridge intrusion alarm system

Communications: electrical – Systems – Call station
Patent

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Alarm switch

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

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Intrusion detection apparatus to signal movement of a partition

Communications: electrical – Systems – Call station
Patent

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Self-adhesive crossover foil of metal and polyester

Stock material or miscellaneous articles – Layer or component removable to expose adhesive – Halogen containing compound
Patent

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System and method for locating a mobile phone

Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Reexamination Certificate

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Profile ID: LFUS-PAI-P-308718

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