Publicação do pedido de patente
#3.1
10/31/1989
RPI 993
Application data
Number
PI8901221Type
Filing
Publication
The letters patent expired on 12/15/2009: 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: 10/31/1989. We update with every new RPI gazette, published weekly.
Applicants
E. C. (pessoa física)
US
Inventors
E. B. (pessoa física)
US
IPC Classification
Priority claims
US
167,944 · 03/14/1988
US
168,030 · 03/14/1988
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