Concessão da patente
#16.1
11/30/1982
RPI 632
The letters patent expired on 05/03/1994: 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: 11/30/1982. We update with every new RPI gazette, published weekly.
Applicants
MC GRAW EDISON CO
Inventors
M. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/30/1982
RPI 632
#13.1
09/08/1982
RPI 620
#9.1
05/18/1982
RPI 604
#6.1
11/24/1981
RPI 579
#21.1
05/03/1994
RPI 1222
From the same holder
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