Solicitação de exame técnico
#4.1
08/08/1989
RPI 981
Application data
Number
PI8605147Type
Filing
Publication
The letters patent expired on 07/22/2008: 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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants
Union Switch & Signal, Inc.
US
Inventors
J. D. (pessoa física)
US
R. C. (pessoa física)
US
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