20.4
07/28/1987
RPI 875
The letters patent expired on 11/21/1995: 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: 07/28/1987. We update with every new RPI gazette, published weekly.
Applicants
A. C. (pessoa física)
US
Inventors
B. R. (pessoa física)
J. A. (pessoa física)
K. L. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
07/28/1987
RPI 875
#16.1
04/24/1984
RPI 705
#13.1
02/07/1984
RPI 694
#9.1
10/25/1983
RPI 679
#7.1
05/17/1983
RPI 656
#4.1
04/27/1982
RPI 601
#21.1
11/21/1995
RPI 1303
From the same holder
Same category
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