Solicitação de exame técnico
#4.1
09/15/1987
RPI 882
Application data
Number
PI8405907Type
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: 09/15/1987. We update with every new RPI gazette, published weekly.
Applicants
E.I. Du Pont de Nemours and Company
US
Inventors
R. K. (pessoa física)
US
IPC Classification
Priority claims
US
554.788 · 11/23/1983
US
647.341 · 09/06/1984
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