Solicitação de exame técnico
#4.1
03/08/1988
RPI 907
Application data
Number
PI8502615Type
Filing
Publication
The letters patent expired on 07/15/2008: 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: 03/08/1988. We update with every new RPI gazette, published weekly.
Applicants
Minnesota Mining and Manufacturing Company
US
Inventors
R. K. (pessoa física)
US
IPC Classification
Priority claims
US
620.438 · 06/14/1984
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