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Current content: 159 823 134 patent documents

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143 307 new documents added

1 003 170 documents amended

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EP 0233446 B1 19900110 - HOLLOW BUILDING BLOCK

Title (en)

HOLLOW BUILDING BLOCK

Publication

EP 0233446 B1 19900110 (DE)

Application

EP 86890356 A 19861223

Priority

AT 45486 A 19860220

Abstract (en)

[origin: EP0233446A2] 1. Hollow moulded block for the erection of a masonry structure or the like which, apart from the load-bearing functions, also serves for the insulation of heat and sound, having a number of openings, which run parallel to the narrow sides and in straight lines in each case from one side face to the opposite side face, characterized in that the openings have an unsymmetrical distribution both with regard to their arrangement and also with regard to the dimensions of their cross-sections.

IPC 1-7

E04B 2/14

IPC 8 full level

E04B 2/14 (2006.01)

CPC (source: EP)

E04B 2/14 (2013.01)

Designated contracting state (EPC)

AT CH DE IT LI NL

DOCDB simple family (publication)

EP 0233446 A2 19870826; EP 0233446 A3 19871209; EP 0233446 B1 19900110; AT 389548 B 19891227; AT A45486 A 19890515; AT E49439 T1 19900115; DE 3668202 D1 19900215

DOCDB simple family (application)

EP 86890356 A 19861223; AT 45486 A 19860220; AT 86890356 T 19861223; DE 3668202 T 19861223