Concessão da patente
#16.1
09/29/1987
RPI 884
The letters patent expired on 10/04/1994: 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: 09/29/1987. We update with every new RPI gazette, published weekly.
Applicants
SAO PAULO TELECOM TELESP SA [BR]
Inventors
V. F. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
09/29/1987
RPI 884
#13.1
06/23/1987
RPI 870
#9.1
02/17/1987
RPI 852
#6.1
07/15/1986
RPI 821
#4.1
10/16/1984
RPI 730
#3.2
07/24/1984
RPI 718
#2.1
07/03/1984
RPI 715
#21.1
10/04/1994
RPI 1244
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.