Concessão da patente
#16.1
07/27/1982
RPI 614
Progress at the INPI
- Filing07/09/74
- Publication
- Examination
- Allowance
- Grant07/27/82
- Expired11/17/92
The letters patent expired on 11/17/1992: 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: 07/27/1982. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
Tokyo Shibaura Electric Co. Ltd.
JP
Inventors
E. B. (pessoa física)
Technical data
IPC Classification
No IPC classification.
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
Notificação para pagamento de retribuição
#13.1
12/15/1981
RPI 582
Carta-patente expirada
#21.1
11/17/1992
RPI 1146
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