Solicitação de exame técnico
#4.1
02/09/1988
RPI 903
Application data
Number
PI8502965Type
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: 02/09/1988. We update with every new RPI gazette, published weekly.
Applicants
Exxon Research And Engineering Company
US
Inventors
D. W. (pessoa física)
IL
W. D. (pessoa física)
US
IPC Classification
Priority claims
US
650.874 · 09/17/1984
US
650.875 · 09/17/1984
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