20.4
12/06/1983
RPI 685
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: 12/06/1983. We update with every new RPI gazette, published weekly.
Applicants
E. A. (pessoa física)
Inventors
K. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
12/06/1983
RPI 685
#16.1
08/30/1983
RPI 671
#13.1
06/07/1983
RPI 659
#9.1
02/08/1983
RPI 642
06/22/1982
RPI 609
#6.1
06/08/1982
RPI 607
12/15/1981
RPI 582
#21.1
05/24/1994
RPI 1225
From the same holder
Same category
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