Concessão da patente
#16.1
05/30/1989
RPI 971
The letters patent expired on 05/24/1994: 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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
REFRATECHNIK GMBH
Inventors
B. P. (pessoa física)
T. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
05/30/1989
RPI 971
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04/25/1989
RPI 966
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RPI 905
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04/17/1984
RPI 704
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02/07/1984
RPI 694
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11/30/1982
RPI 632
12/29/1981
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05/24/1994
RPI 1225
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