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Digital radio pager
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Patent number 4,249,165
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Issue date Feb 3, 1981
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Nippon Electric Co., Ltd.
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Toshihiro Mori
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Selective calling arrangement
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Patent number 4,075,564
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Issue date Feb 21, 1978
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Autophon Aktiengesellschaft
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Christian Masur
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3769593
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Patent number 3,769,593
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Issue date Oct 30, 1973
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G08 - SIGNALLING
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3628150
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Patent number 3,628,150
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Issue date Dec 14, 1971
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3596181
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Patent number 3,596,181
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Issue date Jul 27, 1971
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3551815
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Patent number 3,551,815
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Issue date Dec 29, 1970
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3414881
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Patent number 3,414,881
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Issue date Dec 3, 1968
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3387270
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Patent number 3,387,270
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Issue date Jun 4, 1968
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3335406
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Patent number 3,335,406
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Issue date Aug 8, 1967
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3335405
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Patent number 3,335,405
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Issue date Aug 8, 1967
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3329827
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Patent number 3,329,827
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Issue date Jul 4, 1967
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G06 - COMPUTING CALCULATING COUNTING
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3252142
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Patent number 3,252,142
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Issue date May 17, 1966
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3233221
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Patent number 3,233,221
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Issue date Feb 1, 1966
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3226680
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Patent number 3,226,680
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Issue date Dec 28, 1965
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3226679
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Patent number 3,226,679
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Issue date Dec 28, 1965
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3213425
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Patent number 3,213,425
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Issue date Oct 19, 1965
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3173128
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Patent number 3,173,128
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Issue date Mar 9, 1965
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3172099
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Patent number 3,172,099
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3171098
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Patent number 3,171,098
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3166735
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Patent number 3,166,735
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Issue date Jan 19, 1965
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3158837
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Patent number 3,158,837
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3114142
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Patent number 3,114,142
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Issue date Dec 10, 1963
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3114047
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Patent number 3,114,047
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Issue date Dec 10, 1963
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G06 - COMPUTING CALCULATING COUNTING
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3082404
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Patent number 3,082,404
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Issue date Mar 19, 1963
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G06 - COMPUTING CALCULATING COUNTING
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3080547
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Patent number 3,080,547
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3077577
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Patent number 3,077,577
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3074051
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Patent number 3,074,051
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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3069657
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Patent number 3,069,657
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Issue date Dec 18, 1962
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H04 - ELECTRIC COMMUNICATION TECHNIQUE