320
05/07/1985
RPI 759
The letters patent expired on 12/07/1993: 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: 05/07/1985. We update with every new RPI gazette, published weekly.
Applicants
E. L. (pessoa física)
Inventors
B. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
05/07/1985
RPI 759
01/29/1985
RPI 745
10/09/1984
RPI 729
#17.1
05/22/1984
RPI 709
#16.1
04/26/1983
RPI 653
#13.1
01/25/1983
RPI 640
#9.1
09/14/1982
RPI 621
#6.1
04/13/1982
RPI 599
#21.1
12/07/1993
RPI 1201
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.