20.7
03/11/1986
RPI 803
The letters patent expired on 09/21/1993: 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: 03/11/1986. We update with every new RPI gazette, published weekly.
Applicants
SINGER CO
Inventors
L. R. (pessoa física)
M. P. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
03/11/1986
RPI 803
03/04/1986
RPI 802
#20.1
02/18/1986
RPI 800
#20.1
08/16/1983
RPI 669
#16.1
10/26/1982
RPI 627
#13.1
07/06/1982
RPI 611
#9.1
03/16/1982
RPI 595
#21.1
09/21/1993
RPI 1190
From the same holder
Same category
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