Publicação do pedido de patente
#3.1
11/21/1989
RPI 996
Application data
Number
PI8901639Type
Filing
Publication
The letters patent expired on 12/15/2009: 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: 11/21/1989. We update with every new RPI gazette, published weekly.
Applicants
Maschinenfabrik Sulzer-Burckhardt Ag
CH
Inventors
E. M. (pessoa física)
CH
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
11/21/1989
RPI 996
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05/23/1989
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#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era F04B 21/04.
03/27/2018
RPI 2464
#21.1
Patente extinta em 07/04/2004
12/15/2009
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09/28/1993
RPI 1191
#13.1
07/13/1993
RPI 1180
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03/23/1993
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