22.2
08/01/1989
RPI 980
The letters patent expired on 07/20/1993: 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: 08/01/1989. We update with every new RPI gazette, published weekly.
Applicants
KALTENBACH & VOIGT
Inventors
L. H. (pessoa física)
L. G. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
08/01/1989
RPI 980
#22.1
05/27/1986
RPI 814
#16.1
02/22/1983
RPI 644
#13.1
12/28/1982
RPI 636
#9.1
08/17/1982
RPI 617
#6.1
10/13/1981
RPI 573
#21.1
07/20/1993
RPI 1181
From the same holder
Same category
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