Concessão da patente
#16.1
08/29/1989
RPI 984
Application data
Number
PI8206800Type
Filing
Publication
The letters patent expired on 07/01/2008: 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: 08/29/1989. We update with every new RPI gazette, published weekly.
Applicants
NL Industries, Inc
US
Inventors
W. C. (pessoa física)
US
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