LandOfFree - US Patents - Listing for Communications: electrical,Systems

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Alarm system with supervisory system to detect severing or bridg

Communications: electrical – Systems – Call station

Patent

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Alarm systems

Communications: electrical – Systems – Plural

Patent

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Alarm termination floor apparatus

Communications: electrical – Systems – Timer control

Reexamination Certificate

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Alert device

Communications: electrical – Systems – Timer control

Patent

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Alert system

Communications: electrical – Systems

Reexamination Certificate

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Alerting a care-provider when an elderly or infirm person in...

Communications: electrical – Systems – Timer control

Reexamination Certificate

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Alerting system

Communications: electrical – Systems – Timer control

Reexamination Certificate

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Alerting system using a communication protocol

Communications: electrical – Systems – Audible signals

Reexamination Certificate

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Alerting system with dual-address memory

Communications: electrical – Systems – Nonselective paging

Patent

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Alerting system with dual-address memory

Communications: electrical – Systems – Nonselective paging

Patent

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Alerting system with memory

Communications: electrical – Systems – Nonselective paging

Patent

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Allpurpose portable scoreboard

Communications: electrical – Systems – Game reporting

Patent

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