Telecomunicacoes Brasileiras S/A - Telebras

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Patents Grantslast 30 patents

Information Patent Grant
Circuit for driving inductive sensors for reading and debiting prep...
- Patent number 6,050,488
- Issue date Apr 18, 2000
- Telecomunicacoes Brasileiras S/A - Telebras
- Felipe Ricardo Clayton
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Card reader for two kinds of data cards
- Patent number 5,984,183
- Issue date Nov 16, 1999
- Telecomunicacoes Brasileiras S/A - Telebras
- Paulo Takashi Moriya
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Reading head arrangement for two data card types
- Patent number 5,929,416
- Issue date Jul 27, 1999
- Telecomunicacoes Brasileiras S/A - Telebras
- Manuel Augusto Miranda Dos Santos Pato
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Debiting method for inductive prepayment cards
- Patent number 5,834,757
- Issue date Nov 10, 1998
- Telecomunicacoes Brasileiras S/A Telebras
- Rubens Ramos Fernandes
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Directional coupler for separation of signals in two frequency band...
- Patent number 4,777,457
- Issue date Oct 11, 1988
- Telecomunicacoes Brasileiras S/A - Telebras
- Subir Ghosh
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Corrugated transition device for use between a continuous and a cor...
- Patent number 4,680,558
- Issue date Jul 14, 1987
- Telecomunicacoes Brasileiras S/A - Telebras
- Subir Ghosh
- H01 - BASIC ELECTRIC ELEMENTS