20.7
05/27/1986
RPI 814
The letters patent expired on 05/09/1995: 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: 05/27/1986. We update with every new RPI gazette, published weekly.
Applicants
E. C. (pessoa física)
Inventors
P. (pessoa física)
IPC Classification
No IPC classification.
Priority claims
US
918117 · 06/22/1978
Publications in the Brazilian Industrial Property Gazette (RPI).
05/27/1986
RPI 814
#16.1
09/25/1984
RPI 727
#13.1
06/05/1984
RPI 711
#9.1
02/14/1984
RPI 695
#6.1
09/13/1983
RPI 673
#4.1
05/04/1982
RPI 602
#21.1
05/09/1995
RPI 1275
From the same holder
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