Solicitação de exame técnico
#4.1
09/06/1988
RPI 933
Application data
Number
PI8505424Type
Filing
Publication
The patent was granted on 08/27/1991 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 09/06/1988. We update with every new RPI gazette, published weekly.
Applicants
DU PONT [US]
Inventors
R. J. (pessoa física)
US
IPC Classification
Priority claims
US
668.441 · 11/05/1984
US
728.518 · 04/29/1985
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