Pedido de certificado de adição de invenção
#5.1
08/08/1989
RPI 981
Application data
Number
PI8701192Type
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: 08/08/1989. We update with every new RPI gazette, published weekly.
Applicants
E.I. Du Pont de Nemours and Company
US
Inventors
D. F. (pessoa física)
US
IPC Classification
Priority claims
US
839.921 · 03/17/1986
US
859.204 · 04/28/1986
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