Solicitação de exame técnico
#4.1
06/09/1987
RPI 868
Application data
Number
PI8403850Type
Filing
Publication
The letters patent expired on 07/08/2008: 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: 06/09/1987. We update with every new RPI gazette, published weekly.
Applicants
Shell Internationale Research Maatschappij B.V
NL
Inventors
J. S. (pessoa física)
US
IPC Classification
Priority claims
US
520.882 · 08/05/1983
US
520.883 · 08/05/1983
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