20.4
05/31/1988
RPI 919
The letters patent expired on 12/07/1993: 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: 05/31/1988. We update with every new RPI gazette, published weekly.
Applicants
S. D. (pessoa física)
Inventors
E. B. (pessoa física)
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
05/31/1988
RPI 919
#20.1
04/05/1988
RPI 911
#16.1
09/29/1987
RPI 884
#13.1
06/23/1987
RPI 870
#15.11
06/09/1987
RPI 868
#9.1
02/17/1987
RPI 852
10/29/1986
RPI 836
#7.1
10/22/1985
RPI 783
#4.1
02/16/1982
RPI 591
#21.1
12/07/1993
RPI 1201
Patent monitoring
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