20.7
09/06/1988
RPI 933
Application data
Number
PI8204429Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 09/06/1988. We update with every new RPI gazette, published weekly.
Applicants
E. C. (pessoa física)
US
Inventors
E. R. (pessoa física)
US
R. H. (pessoa física)
US
IPC Classification
Priority claims
US
287,470 · 07/27/1981
Publications in the Brazilian Industrial Property Gazette (RPI).
09/06/1988
RPI 933
#16.1
04/26/1988
RPI 914
#13.1
01/26/1988
RPI 901
#9.1
09/08/1987
RPI 881
#6.1
07/29/1986
RPI 823
#4.1
09/10/1985
RPI 777
#3.1
07/19/1983
RPI 665
#2.1
09/14/1982
RPI 621
#21.1
Patente extinta em 27/07/97
07/01/2008
RPI 1956
From the same holder
Same category
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