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Current content: 155 263 406 patent documents

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215 613 new documents added

1 342 057 documents amended

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EP 0339456 A3 19901227 - DEVICE FOR OPERATING A CYLINDER-VALVE OF A BRASS INSTRUMENT

Title (en)

DEVICE FOR OPERATING A CYLINDER-VALVE OF A BRASS INSTRUMENT

Publication

EP 0339456 A3 19901227 (DE)

Application

EP 89107017 A 19890419

Priority

DE 3814114 A 19880427

Abstract (en)

[origin: EP0339456A2] In a device for operating a cylinder valve of brass instruments for connecting and disconnecting crooks, a tension spring is provided for returning the press plate designed as a lever, the spring being arranged at the lower end of the press plate lever and on a frame rigidly joined to the instrument. <IMAGE>

IPC 1-7

G10D 9/04

IPC 8 full level

G10D 9/04 (2006.01)

CPC (source: EP)

G10D 9/04 (2013.01)

Citation (search report)

[A] DE 58323 C
[A] US 1922685 A 19330815 - JOHNSON ALFRED J

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0339456 A2 19891102; EP 0339456 A3 19901227; DE 3814114 A1 19900503

DOCDB simple family (application)

EP 89107017 A 19890419; DE 3814114 A 19880427