20.7
03/10/1987
RPI 855
Progress at the INPI
- Filing02/23/79
- Publication
- Examination
- Allowance05/18/82
- Grant
- Expired12/07/93
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: 03/10/1987. We update with every new RPI gazette, published weekly.
Applicants and inventors
Applicants
T. L. (pessoa física)
Inventors
No inventors listed.
Technical data
IPC Classification
No IPC classification.
Prosecution history
Publications in the Brazilian Industrial Property Gazette (RPI).
20.7
09/30/1986
RPI 832
20.7
09/23/1986
RPI 831
Notificação para pagamento de retribuição
#13.1
09/08/1982
RPI 620
Deferimento
#9.1
05/18/1982
RPI 604
Carta-patente expirada
#21.1
12/07/1993
RPI 1201
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