Solicitação de exame técnico
#4.1
09/06/1988
RPI 933
Application data
Number
PI8505515Type
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: 09/06/1988. We update with every new RPI gazette, published weekly.
Applicants
Keystone International Holdings Corp.
US
Inventors
C. B. (pessoa física)
JP
IPC Classification
Priority claims
GB
8427872 · 11/03/1984
GB
8429204 · 11/19/1984
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