4. Communications: electrical
  5. Continuously variable indicating
  6. With meter reading

Hideyuki Katayama

Inventor

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Message protection radio display paging using confidential code

Communications: electrical – Continuously variable indicating – With meter reading
Patent

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Musical alert radio pager

Communications: electrical – Selective – Having indication or alarm
Reexamination Certificate

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Password-protected pager

Telecommunications – Transmitter and receiver at separate stations
Patent

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Profile ID: LFUS-PAI-P-94434

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