Solicitação de exame técnico
#4.1
05/31/1988
RPI 919
Application data
Number
PI8503695Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 05/31/1988. We update with every new RPI gazette, published weekly.
Applicants
E.I. Du Pont de Nemours and Company
US
Inventors
J. V. (pessoa física)
US
IPC Classification
Priority claims
US
639.081 · 08/09/1984
US
687.364 · 12/28/1984
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