20.7
06/17/1986
RPI 817
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: 06/17/1986. We update with every new RPI gazette, published weekly.
Applicants
SINGER CO
Inventors
M. [. (pessoa física)
IPC Classification
No IPC classification.
Publications in the Brazilian Industrial Property Gazette (RPI).
06/17/1986
RPI 817
06/03/1986
RPI 815
#20.1
05/27/1986
RPI 814
#21.1
09/21/1993
RPI 1190
From the same holder
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