1
Dodd George Alexander: Improvements in or relating to telecommunication cables. British Insulated Callenders, June 16, 1965: GB995582-A (6 worldwide citation)

995,582. Cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. May 20, 1964 [May 21, 1963], No. 20258/63. Heading H1A. In a telecommunication cable designed to prevent migration of moisture along its length the conductors are individually insulated with a cellular plastics material and the interstices b ...


2
Dodd George Alexander, Boura John: Improvements in or relating to thermionic valve amplifying circuits. British Telecomm Res, June 29, 1955: GB732567-A

732,567. Valve amplifying circuits. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Oct. 5, 1953 [Oct. 31, 1952], No. 27478/52. Class 40 (6). In a wide-band amplifier comprising a pair of valves V1, V2 with inputs and outputs connected in parallel, the outputs being connected together at the succeeding st ...


3
Dodd George Alexander, Jude Peter Vivian Wilson: Improvements in automatic control devices for use in telecommunication systems. British Telecomm Res, June 20, 1956: GB750519-A

750,519. Automatic gain &c. control. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Sept. 7, 1954 [Sept. 10, 1953], No. 25094/53. Class 40 (4). In an arrangement for regulating the gain, frequency or phase in a carrier current communication system, the discrepancy between a pilot current and a reference c ...


4
Dodd George Alexander, Clark Harold William: Improvements in or relating to the supervision of unattended repeater stations. British Telecomm Res, April 17, 1957: GB772733-A

772,733. Repeating systems. BRITISH TELECOMMUNICATION RESEARCH, Ltd. Feb. 11, 1955 [March 2, 1954], No. 6156/54. Class 40 (4). In a communication system having unattended repeater stations each station is allocated a pair of characteristic signalling frequencies each of which may be transmitted cont ...


5
Lawton John, Dodd George Alexander: Improvements in or relating to harmonic generators. British Telecomm Res, August 31, 1955: GB735940-A

735,940. Changing frequency. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. July 8, 1953 [July 10, 1952], No. 17449/52. Class 38 (2). A harmonic generator suitable for use in telecommunication systems may comprise a source of constant substantially sinusoidal voltage which feeds a capacitor CS in series ...


6
Dodd George Alexander: Improvements in or relating to frequency dividing regenerative modulators. British Telecomm Res, August 18, 1954: GB713667-A

713,667. Generating oscillations. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd. Sept. 4, 1952 [Sept. 13, 1951], No. 21570/51. Class 40 (5) A frequency-dividing arrangement comprises a plurality of frequency dividing loops of the type employing back-coupled modulators, a low-pass filter and an oscillator ...


7
Dodd George Alexander, Helliwell Brian Stanley: Improvements in or relating to power feed arrangements for telecommunication or like systems. British Telecomm Res, February 17, 1960: GB828454-A

828,454. Feeding unattended repeaters. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Nov. 21, 1957 [Dec. 7, 1956], No. 37508/56. Addition to 744,340. Class 40 (4). In a system in which repeaters are normally supplied with power from a source at one end of the line, on the occurrence of a fault likely to ...


8

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Dodd George Alexander: Improvements in or relating to telecommunication cables. British Insulated Callenders, February 28, 1968: GB1104450-A

1,104,450. Telecommunication cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. 20 Sept., 1966 [20 Sept., 1965; 23 Dec., 1965], Nos. 39921/65 and 54641/65. Addition to 995,582. Heading H1A. In the cable of the parent Specification 995,582, which has a plurality of conductors, each with a cellular pla ...


10
Dodd George Alexander: Improvements in or relating to telecommunication cables. British Insulated Callenders, December 20, 1967: GB1095639-A

1,095,639. Telecommunication cables. BRITISH INSULATED CALLENDER'S CABLES Ltd. Sept. 20, 1966 [Dec. 23, 1965], No. 54640/65. Addition to 995,582. Heading H1A. In the cable of the parent Specification which has a plurality of conductors, each with a cellular plastics dielectric, enclosed in a waterpr ...