Publicação do pedido de patente
#3.1
11/28/1989
RPI 997
Application data
Number
PI8901755Type
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: 11/28/1989. We update with every new RPI gazette, published weekly.
Applicants
Cameron Iron Works USA, Inc
US
Cooper Industries, Inc
US
Inventors
J. I. (pessoa física)
US
J. H. (pessoa física)
US
W. T. (pessoa física)
US
Publications in the Brazilian Industrial Property Gazette (RPI).
#3.1
11/28/1989
RPI 997
#2.1
05/30/1989
RPI 971
#15.11
Procedimento automático de reclassificação. A classificação IPC anterior era G21B 19/00.
03/27/2018
RPI 2464
#21.1
Patente extinta em 13/04/2004
12/15/2009
RPI 2032
#25.11
Referência: RPI 1410 de 30/12/1997; item (73); código 25.1 @ Transferido por fusão de: Cameron Iron Works USA, INC.
01/05/1999
RPI 1461
#25.1
01/06/1998
RPI 1411
#25.1
12/30/1997
RPI 1410
#16.1
10/25/1994
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#13.1
06/07/1994
RPI 1227
#9.1
02/22/1994
RPI 1212
#4.1
12/24/1991
RPI 1099
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