20.7
04/12/1988
RPI 912
The patent was granted on 01/25/1983 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.
Talk to a specialistLatest action published by the INPI: 04/12/1988. We update with every new RPI gazette, published weekly.
Applicants
Qt-Engenharia e Equipamentos S/A
SP, BR
Inventors
F. W. (pessoa física)
IPC Classification
Publications in the Brazilian Industrial Property Gazette (RPI).
04/12/1988
RPI 912
#16.1
01/25/1983
RPI 640
#13.1
11/03/1982
RPI 628
#9.1
07/06/1982
RPI 611
04/06/1982
RPI 598
#6.1
11/17/1981
RPI 578
#18.2
04/27/1993
RPI 1169
From the same holder
Same category
Patent monitoring
Receive alerts on INPI events, decisions, and expiry dates for your portfolio.