Solicitação de exame técnico
#4.1
06/23/1987
RPI 870
Application data
Number
PI8402619Type
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: 06/23/1987. We update with every new RPI gazette, published weekly.
Applicants
Minnesota Mining and Manufacturing Company
US
Inventors
R. O. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
06/23/1987
RPI 870
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Patente extinta em 31/05/99
07/08/2008
RPI 1957
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10/26/1993
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