20.11
09/13/1983
RPI 673
The letters patent expired on 07/27/1993: 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: 09/13/1983. We update with every new RPI gazette, published weekly.
Applicants
ALLEGHENY LUDLUM IND INC
Inventors
B. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
09/13/1983
RPI 673
#20.1
06/21/1983
RPI 661
#16.1
02/24/1982
RPI 592
#21.1
07/27/1993
RPI 1182
From the same holder
Same category
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