20.4
03/31/1987
RPI 858
The letters patent expired on 06/21/1994: 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: 03/31/1987. We update with every new RPI gazette, published weekly.
Applicants
R. A. (pessoa física)
Inventors
B. K. (pessoa física)
D. W. (pessoa física)
K. A. (pessoa física)
K. O. (pessoa física)
P. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
03/31/1987
RPI 858
07/29/1986
RPI 823
#16.1
04/29/1986
RPI 810
#13.1
01/14/1986
RPI 795
#9.1
09/10/1985
RPI 777
#6.1
02/12/1985
RPI 747
#6.1
01/10/1984
RPI 690
#6.1
08/30/1983
RPI 671
#6.1
06/08/1982
RPI 607
#21.1
06/21/1994
RPI 1229
From the same holder
Same category
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