Concessão da patente
#16.1
11/29/1988
RPI 945
The letters patent expired on 05/31/1994: 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: 11/29/1988. We update with every new RPI gazette, published weekly.
Applicants
ENVIROTECH CORP
Inventors
D. S. (pessoa física)
H. R. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/29/1988
RPI 945
#13.1
07/19/1988
RPI 926
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03/15/1988
RPI 908
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09/01/1987
RPI 880
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07/15/1986
RPI 821
04/02/1985
RPI 754
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04/02/1985
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RPI 623
05/11/1982
RPI 603
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03/09/1982
RPI 594
#21.1
05/31/1994
RPI 1226
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Same category
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