Notificação para pagamento de retribuição
#13.1
11/14/1989
RPI 995
Application data
Number
PI8502659Type
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: 11/14/1989. We update with every new RPI gazette, published weekly.
Applicants
E.I. Du Pont de Nemours and Company
US
Inventors
E. B. (pessoa física)
US
W. K. (pessoa física)
US
IPC Classification
Priority claims
US
618.112 · 06/07/1984
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