4. Telephonic communications
  5. Special services
  6. Call waiting

Rhoda Yaker

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Advanced call waiting processing

Telephonic communications – Special services – Call waiting
Patent

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Advanced call waiting processing

Telephonic communications – Special services – Call waiting
Patent

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Advanced call waiting processing

Telephonic communications – Special services – Call waiting
Patent

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Integrated pager and calling card

Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent

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Private electronic message system

Electrical computers and digital processing systems: multicomput – Computer conferencing – Demand based messaging
Reexamination Certificate

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Profile ID: LFUS-PAI-P-347908

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