| Office | INPI |
| Document type: | Patent |
| Inventor(s): | Eloy Ferraz Machado Junior |
| Applicant: | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP); Universidade de São Paulo (USP). |
| Year: | 1991 |
| Application Number: | PI 9103998-3 |
| IPC: | E04H 1/02 |
| Grantee: | Cristiane Lopes Mendes |
| Principal Investigator: | Eloy Ferraz Machado Junior |
| Institution: | Universidade de São Paulo (USP). Escola de Engenharia de São Carlos (EESC) |
| Support Opportunities: | Scholarships in Brazil - Scientific Initiation |