Solicitação de exame técnico
#4.1
06/27/1989
RPI 975
Application data
Number
PI8703182Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 06/27/1989. We update with every new RPI gazette, published weekly.
Applicants
Telecomunicações de Minas Gerais S/A - TELEMIG
MG, BR
Inventors
J. V. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
06/27/1989
RPI 975
#3.1
01/10/1989
RPI 951
#2.1
09/01/1987
RPI 880
#21.1
Patente extinta em 17/06/2002
07/29/2008
RPI 1960
#22.1
05/30/1995
RPI 1278
#16.1
08/30/1994
RPI 1239
#13.1
03/22/1994
RPI 1216
#9.1
11/03/1993
RPI 1196
#6.1
03/30/1993
RPI 1165
From the same holder
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.