Solicitação de exame técnico
#4.1
11/08/1988
RPI 942
Application data
Number
PI8704284Type
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
898.664 · 08/21/1986
US
898.666 · 08/21/1986
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