Solicitação de exame técnico
#4.1
11/08/1988
RPI 942
Application data
Number
PI8704285Type
Filing
Publication
The letters patent expired on 07/29/2008: 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: 11/08/1988. We update with every new RPI gazette, published weekly.
Applicants
PPG INDUSTRIES INC [US]
Inventors
M. B. (pessoa física)
US
R. A. (pessoa física)
US
S. J. (pessoa física)
US
W. B. (pessoa física)
US
IPC Classification
Priority claims
US
898.665 · 08/21/1986
US
898.670 · 08/21/1986
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