6.2
05/30/1989
RPI 971
Application data
Number
PI8503938Type
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: 05/30/1989. We update with every new RPI gazette, published weekly.
Applicants
Union Switch & Signal, Inc.
US
Inventors
R. B. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
05/30/1989
RPI 971
#4.1
04/26/1988
RPI 914
#3.1
05/27/1986
RPI 814
#2.1
10/22/1985
RPI 783
#21.1
Patente extinta em 19/08/2000
07/15/2008
RPI 1958
#16.1
06/30/1992
RPI 1126
#13.1
12/10/1991
RPI 1097
#9.1
08/13/1991
RPI 1080
09/25/1990
RPI 1034
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