Carta-patente expirada
#21.1
10/11/1988
RPI 938
The letters patent expired on 10/11/1988: 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: 10/11/1988. We update with every new RPI gazette, published weekly.
Applicants
W. B. (pessoa física)
Inventors
F. A. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
#21.1
10/11/1988
RPI 938
#16.1
01/25/1983
RPI 640
#13.1
10/05/1982
RPI 624
#9.1
06/22/1982
RPI 609
#6.1
12/22/1981
RPI 583
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.