14.1
09/19/1989
RPI 987
The letters patent expired on 09/25/2001: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.
Talk to a specialistLatest action published by the INPI: 09/19/1989. We update with every new RPI gazette, published weekly.
Applicants
Centro Auditivo Telex S/A
RJ, BR
Inventors
S. K. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/19/1989
RPI 987
#2.1
05/30/1989
RPI 971
#15.11
A Classificação Anterior era: A61F 11/00
01/26/2021
RPI 2612
#21.1
Patente extinta em 26/12/98 conforme disposto no artigo 24 da Lei 5772/71 (CPI).
09/25/2001
RPI 1603
#16.1
12/29/1992
RPI 1152
#13.1
07/28/1992
RPI 1130
#9.1
03/03/1992
RPI 1109
#6.1
09/03/1991
RPI 1083
#4.1
01/08/1991
RPI 1049
#3.1
08/14/1990
RPI 1028
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