20.4
02/09/1988
RPI 903
The letters patent expired on 04/25/1995: 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
Yokogawa Eletric Works, Ltd.
Inventors
M. N. (pessoa física)
Publications in the Brazilian Industrial Property Gazette (RPI).
02/09/1988
RPI 903
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02/22/1983
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09/21/1982
RPI 622
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06/01/1982
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04/25/1995
RPI 1273
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