NL142045B - Elektromagnetische doostelefoon of -microfoon. - Google Patents

Elektromagnetische doostelefoon of -microfoon.

Info

Publication number
NL142045B
NL142045B NL6606482A NL6606482A NL142045B NL 142045 B NL142045 B NL 142045B NL 6606482 A NL6606482 A NL 6606482A NL 6606482 A NL6606482 A NL 6606482A NL 142045 B NL142045 B NL 142045B
Authority
NL
Netherlands
Prior art keywords
microphone
electromagnetic
domestic phone
domestic
phone
Prior art date
Application number
NL6606482A
Other languages
English (en)
Dutch (nl)
Other versions
NL6606482A (enExample
Original Assignee
Industrial Research Prod Inc
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 Industrial Research Prod Inc filed Critical Industrial Research Prod Inc
Publication of NL6606482A publication Critical patent/NL6606482A/xx
Publication of NL142045B publication Critical patent/NL142045B/xx

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
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
NL6606482A 1965-11-12 1966-05-12 Elektromagnetische doostelefoon of -microfoon. NL142045B (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50733465A 1965-11-12 1965-11-12

Publications (2)

Publication Number Publication Date
NL6606482A NL6606482A (enExample) 1967-05-16
NL142045B true NL142045B (nl) 1974-04-16

Family

ID=24018229

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6606482A NL142045B (nl) 1965-11-12 1966-05-12 Elektromagnetische doostelefoon of -microfoon.

Country Status (4)

Country Link
CH (1) CH448179A (enExample)
DE (1) DE1462163A1 (enExample)
DK (1) DK124100B (enExample)
NL (1) NL142045B (enExample)

Also Published As

Publication number Publication date
DE1462163B2 (enExample) 1970-06-04
CH448179A (de) 1967-12-15
DE1462163A1 (de) 1968-11-14
DK124100B (da) 1972-09-11
NL6606482A (enExample) 1967-05-16

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee
NL80 Abbreviated name of patent owner mentioned of already nullified patent

Owner name: IND RESEARCH