GB533360A - Improvements in or relating to electric signalling systems - Google Patents

Improvements in or relating to electric signalling systems

Info

Publication number
GB533360A
GB533360A GB2298139A GB2298139A GB533360A GB 533360 A GB533360 A GB 533360A GB 2298139 A GB2298139 A GB 2298139A GB 2298139 A GB2298139 A GB 2298139A GB 533360 A GB533360 A GB 533360A
Authority
GB
United Kingdom
Prior art keywords
networks
network
valve
bias
signals
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2298139A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ERNEST RONALD COCKDAIN
RICHARD ADNEY MEERS
STC PLC
Original Assignee
ERNEST RONALD COCKDAIN
RICHARD ADNEY MEERS
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE479727D priority Critical patent/BE479727A/xx
Application filed by ERNEST RONALD COCKDAIN, RICHARD ADNEY MEERS, Standard Telephone and Cables PLC filed Critical ERNEST RONALD COCKDAIN
Priority to GB2298139A priority patent/GB533360A/en
Publication of GB533360A publication Critical patent/GB533360A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB2298139A 1939-08-09 1939-08-09 Improvements in or relating to electric signalling systems Expired GB533360A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE479727D BE479727A (enrdf_load_html_response) 1939-08-09
GB2298139A GB533360A (en) 1939-08-09 1939-08-09 Improvements in or relating to electric signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2298139A GB533360A (en) 1939-08-09 1939-08-09 Improvements in or relating to electric signalling systems

Publications (1)

Publication Number Publication Date
GB533360A true GB533360A (en) 1941-02-12

Family

ID=10188166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2298139A Expired GB533360A (en) 1939-08-09 1939-08-09 Improvements in or relating to electric signalling systems

Country Status (2)

Country Link
BE (1) BE479727A (enrdf_load_html_response)
GB (1) GB533360A (enrdf_load_html_response)

Also Published As

Publication number Publication date
BE479727A (enrdf_load_html_response)

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