Solicitação de exame técnico
#4.1
07/18/1989
RPI 978
Application data
Number
PI8506039Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 07/18/1989. We update with every new RPI gazette, published weekly.
Applicants
A. I. (pessoa física)
US
Inventors
E. W. (pessoa física)
US
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#4.1
07/18/1989
RPI 978
#3.1
06/30/1987
RPI 871
#2.1
02/18/1986
RPI 800
#21.1
Patente extinta em 03/12/2000
07/15/2008
RPI 1958
#16.1
08/27/1991
RPI 1082
#13.1
04/23/1991
RPI 1064
#9.1
01/08/1991
RPI 1049
From the same holder
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