Pedido de certificado de adição de invenção
#5.1
11/08/1988
RPI 942
Application data
Number
PI8506582Type
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: 11/08/1988. We update with every new RPI gazette, published weekly.
Applicants
AE Plc
GB
Dresser Industries, Inc
US
Inventors
J. W. (pessoa física)
JP
W. S. (pessoa física)
US
IPC Classification
Priority claims
GB
8500282 · 01/05/1985
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