20.11
08/02/1988
RPI 928
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: 08/02/1988. We update with every new RPI gazette, published weekly.
Applicants
K. A. (pessoa física)
Inventors
B. H. (pessoa física)
S. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/02/1988
RPI 928
#20.1
07/12/1988
RPI 925
#16.1
02/22/1983
RPI 644
#9.1
08/10/1982
RPI 616
#4.1
12/29/1981
RPI 584
#21.1
05/31/1994
RPI 1226
#20.1
11/12/1991
RPI 1093
From the same holder
Same category
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