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Current content: 157 117 910 patent documents

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1 340 825 documents amended

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EP 0450685 A1 19911009 - Apparatus for sound reproduction.

Title (en)

Apparatus for sound reproduction.

Title (de)

Tonwiedergabegerät.

Title (fr)

Appareil de reproduction sonore.

Publication

EP 0450685 A1 19911009 (EN)

Application

EP 91200574 A 19910318

Priority

NL 9000670 A 19900322

Abstract (en)

Apparatus for sound reproduction comprising an acoustic box which at its upper side is provided with a loudspeaker, the loudspeaker-opening of which is directed upwards, while coaxially above this loudspeaker a second loudspeaker is arranged, the loudspeaker-opening of which is directed downwards. <IMAGE>

IPC 1-7

H04R 1/34; H04R 1/40

IPC 8 full level

H04R 1/34 (2006.01); H04R 1/40 (2006.01)

CPC (source: EP)

H04R 1/345 (2013.01); H04R 1/403 (2013.01)

Citation (search report)

[X] US 3371742 A 19680305 - NORTON DESMOND H, et al
[X] GB 2184323 A 19870617 - MIDLEN TRADING CORP
[X] FR 2632801 A1 19891215 - VOISE SERGE [FR]
[X] GB 2188811 A 19871007 - CANON KK
[X] DE 2041906 A1 19730530 - POENSGEN KARL OTTO

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0450685 A1 19911009; NL 9000670 A 19911016

DOCDB simple family (application)

EP 91200574 A 19910318; NL 9000670 A 19900322