16.4
12/13/1983
RPI 686
The letters patent expired on 06/21/1994: 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: 12/13/1983. We update with every new RPI gazette, published weekly.
Applicants
RES ENG & MFG
Inventors
M. H. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
12/13/1983
RPI 686
#13.1
08/02/1983
RPI 667
#9.1
03/22/1983
RPI 648
#6.1
06/15/1982
RPI 608
#21.1
06/21/1994
RPI 1229
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.