AU414104B2 - Improvements in and relating to carbon microphones - Google Patents

Improvements in and relating to carbon microphones

Info

Publication number
AU414104B2
AU414104B2 AU24360/67A AU2436067A AU414104B2 AU 414104 B2 AU414104 B2 AU 414104B2 AU 24360/67 A AU24360/67 A AU 24360/67A AU 2436067 A AU2436067 A AU 2436067A AU 414104 B2 AU414104 B2 AU 414104B2
Authority
AU
Australia
Prior art keywords
relating
carbon microphones
microphones
carbon
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
AU24360/67A
Other versions
AU2436067A (en
Inventor
Alban Austin John
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.)
Philips Industries Pty Ltd
Original Assignee
Philips Industries Pty Ltd
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
Application filed by Philips Industries Pty Ltd filed Critical Philips Industries Pty Ltd
Priority to AU24360/67A priority Critical patent/AU414104B2/en
Publication of AU2436067A publication Critical patent/AU2436067A/en
Application granted granted Critical
Publication of AU414104B2 publication Critical patent/AU414104B2/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
    • H04R21/00—Variable-resistance transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
AU24360/67A 1968-07-08 1968-07-08 Improvements in and relating to carbon microphones Expired AU414104B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU24360/67A AU414104B2 (en) 1968-07-08 1968-07-08 Improvements in and relating to carbon microphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU24360/67A AU414104B2 (en) 1968-07-08 1968-07-08 Improvements in and relating to carbon microphones

Publications (2)

Publication Number Publication Date
AU2436067A AU2436067A (en) 1970-01-15
AU414104B2 true AU414104B2 (en) 1971-06-17

Family

ID=3713279

Family Applications (1)

Application Number Title Priority Date Filing Date
AU24360/67A Expired AU414104B2 (en) 1968-07-08 1968-07-08 Improvements in and relating to carbon microphones

Country Status (1)

Country Link
AU (1) AU414104B2 (en)

Also Published As

Publication number Publication date
AU2436067A (en) 1970-01-15

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