DE737071C - Ansatzstueck fuer ein Fernsprechgeraet - Google Patents

Ansatzstueck fuer ein Fernsprechgeraet

Info

Publication number
DE737071C
DE737071C DEP81547D DEP0081547D DE737071C DE 737071 C DE737071 C DE 737071C DE P81547 D DEP81547 D DE P81547D DE P0081547 D DEP0081547 D DE P0081547D DE 737071 C DE737071 C DE 737071C
Authority
DE
Germany
Prior art keywords
microphone
holder
throat
usual
extension piece
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
DEP81547D
Other languages
German (de)
English (en)
Inventor
Dr Jan De Boer
Jan Willem Knevel
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 Intellectual Property and Standards GmbH
Original Assignee
Philips Patentverwaltung GmbH
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 Patentverwaltung GmbH filed Critical Philips Patentverwaltung GmbH
Application granted granted Critical
Publication of DE737071C publication Critical patent/DE737071C/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/12—Sanitary or hygienic devices for mouthpieces or earpieces, e.g. for protecting against infection

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
DEP81547D 1939-11-22 1940-11-16 Ansatzstueck fuer ein Fernsprechgeraet Expired DE737071C (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL220359X 1939-11-22

Publications (1)

Publication Number Publication Date
DE737071C true DE737071C (de) 1943-07-05

Family

ID=19779319

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP81547D Expired DE737071C (de) 1939-11-22 1940-11-16 Ansatzstueck fuer ein Fernsprechgeraet

Country Status (4)

Country Link
BE (1) BE440889A (fr)
CH (1) CH220359A (fr)
DE (1) DE737071C (fr)
FR (1) FR871481A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078179B (de) * 1957-02-01 1960-03-24 Draegerwerk Ag Mikrophon fuer Gasmasken

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1078179B (de) * 1957-02-01 1960-03-24 Draegerwerk Ag Mikrophon fuer Gasmasken

Also Published As

Publication number Publication date
BE440889A (fr)
CH220359A (de) 1942-03-31
FR871481A (fr) 1942-04-27

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