Bibliographic data

Document DE000000975222B (Pages: 4)

Bibliographic data Document DE000000975222B (Pages: 4)
INID Criterion Field Contents
54 Title TI [DE] Lautsprecheranordnung mit Richtwirkung
71/73 Applicant/owner PA SIEMENS AG
72 Inventor IN DARRE ALLAN DIPL-ING DR ; KALUSCHE HEINRICH DIPL-ING ; SPANDOECK FRIEDRICH DR-ING
22/96 Application date AD Apr 17, 1949
21 Application number AN P 0040064
Country of application AC DE
Publication date PUB Oct 5, 1961
33
31
32		 Priority data PRC
PRN
PRD

51 IPC main class ICM
51 IPC secondary class ICS
IPC additional class ICA
IPC index class ICI
Cooperative patent classification CPC H04R 1/403
MCD main class MCM
MCD secondary class MCS H04R 1/40 (2006.01)
MCD additional class MCA
57 Abstract AB
56 Cited documents identified in the search CT DE000000704243A
DE000000712580A
DE000000718134A
DE000000934353B
DE000000945768B
GB000000492098A
US000000985524A
US000000989250A
US000001874733A
US000001985251A
US000002127110A
US000002174163A
US000002305598A
56 Cited documents indicated by the applicant CT
56 Cited non-patent literature identified in the search CTNP
56 Cited non-patent literature indicated by the applicant CTNP
Citing documents Determine documents
Sequence listings
Search file IPC ICP G10K 11/26
H04R 1/40