Concessão da patente
#16.1
11/30/1982
RPI 632
The letters patent expired on 07/13/1993: 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: 11/30/1982. We update with every new RPI gazette, published weekly.
Applicants
IBM
Inventors
K. N. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#16.1
11/30/1982
RPI 632
#13.1
08/31/1982
RPI 619
#9.1
04/27/1982
RPI 601
12/01/1981
RPI 580
#6.1
11/10/1981
RPI 577
#21.1
07/13/1993
RPI 1180
From the same holder
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