DE3221032C2 - - Google Patents

Info

Publication number
DE3221032C2
DE3221032C2 DE3221032A DE3221032A DE3221032C2 DE 3221032 C2 DE3221032 C2 DE 3221032C2 DE 3221032 A DE3221032 A DE 3221032A DE 3221032 A DE3221032 A DE 3221032A DE 3221032 C2 DE3221032 C2 DE 3221032C2
Authority
DE
Germany
Prior art keywords
sound
shell
handset
telephone
attachment
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 - Lifetime
Application number
DE3221032A
Other languages
German (de)
English (en)
Other versions
DE3221032A1 (de
Inventor
Reinhard 6361 Niddatal De Napierski
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19823221032 priority Critical patent/DE3221032A1/de
Priority to AU13679/83A priority patent/AU1367983A/en
Priority to IT12538/83A priority patent/IT1171171B/it
Publication of DE3221032A1 publication Critical patent/DE3221032A1/de
Application granted granted Critical
Publication of DE3221032C2 publication Critical patent/DE3221032C2/de
Granted 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/18—Methods or devices for transmitting, conducting or directing sound
    • G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Telephone Set Structure (AREA)
DE19823221032 1982-06-04 1982-06-04 Zweithoerer fuer telefonapparate Granted DE3221032A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19823221032 DE3221032A1 (de) 1982-06-04 1982-06-04 Zweithoerer fuer telefonapparate
AU13679/83A AU1367983A (en) 1982-06-04 1983-04-20 Double sonic earpiece
IT12538/83A IT1171171B (it) 1982-06-04 1983-06-03 Ricevitore supplementare per apparecchi telefonici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823221032 DE3221032A1 (de) 1982-06-04 1982-06-04 Zweithoerer fuer telefonapparate

Publications (2)

Publication Number Publication Date
DE3221032A1 DE3221032A1 (de) 1983-12-08
DE3221032C2 true DE3221032C2 (enExample) 1990-08-30

Family

ID=6165272

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823221032 Granted DE3221032A1 (de) 1982-06-04 1982-06-04 Zweithoerer fuer telefonapparate

Country Status (3)

Country Link
AU (1) AU1367983A (enExample)
DE (1) DE3221032A1 (enExample)
IT (1) IT1171171B (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2377116A (en) * 2001-06-29 2002-12-31 Nokia Corp A holder for a portable telephone with an amplifying horn

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE375169C (de) * 1923-05-08 Friedrich Lehmann Telephonhilfshoerer mit Einrichtung zum Anschluss eines Nippels bzw. Schlauches, um das zweite Ohr beim Abhoeren zu beteiligen
DE1762275A1 (de) * 1968-05-14 1970-09-10 Miedel Geb Nielsen Dr Phil Hil Zweithoerer fuer Fernsprechapparate
DE2752556C2 (de) * 1977-11-22 1979-09-06 Kurt 1000 Berlin Fuerst Zweithöhrer für Fernsprechapparate

Also Published As

Publication number Publication date
IT1171171B (it) 1987-06-10
IT8312538A0 (it) 1983-06-03
DE3221032A1 (de) 1983-12-08
AU1367983A (en) 1983-12-08

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee