Solicitação de exame técnico
#4.1
04/04/1989
RPI 963
The letters patent expired on 07/01/2008: 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: 04/04/1989. We update with every new RPI gazette, published weekly.
Applicants
W. O. (pessoa física)
SP, BR
Inventors
W. O. (pessoa física)
BR
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
04/04/1989
RPI 963
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01/03/1989
RPI 950
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Patente extinta em 23/09/1997
07/01/2008
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07/01/1997
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RPI 1288
05/23/1995
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