Publicação do pedido de patente
#3.1
12/01/1987
RPI 893
Application data
Number
PI8700017Type
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: 12/01/1987. We update with every new RPI gazette, published weekly.
Applicants
Minnesota Mining and Manufacturing Company
US
Inventors
R. L. (pessoa física)
US
IPC Classification
Priority claims
US
818,202 · 01/13/1986
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
12/01/1987
RPI 893
#2.1
05/19/1987
RPI 865
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Patente extinta em 06/01/2002
07/29/2008
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05/31/1994
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10/26/1993
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07/31/1990
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