20.4
09/23/1986
RPI 831
The letters patent expired on 11/30/1993: 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: 09/23/1986. We update with every new RPI gazette, published weekly.
Applicants
R. K. (pessoa física)
Inventors
No inventors listed.
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
09/23/1986
RPI 831
#13.1
07/27/1982
RPI 614
05/11/1982
RPI 603
#9.1
04/06/1982
RPI 598
#21.1
11/30/1993
RPI 1200
From the same holder
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