Carta-patente expirada
#21.1
Patente extinta em 21/04/2004
12/29/2009
RPI 2034
Application data
Number
PI8907396Type
Filing
Publication
PCT
US1989001723 The letters patent expired on 12/29/2009: 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: 12/29/2009. We update with every new RPI gazette, published weekly.
Applicants
Donaldson Company, Inc
US
Inventors
D. E. (pessoa física)
US
S. G. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
Patente extinta em 21/04/2004
12/29/2009
RPI 2034
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04/06/1993
RPI 1166
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04/23/1991
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