Valavaara; Viljo K.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Valavaara; Viljo K..The latest application filed is for "low head turbine".
- Valavaara; Viljo K. - Scarborough CA
- Valavaara; Viljo K. - E. Toronto Ontario CA
- Valavaara; Viljo K. - Toronto Ontario CA
- Valavaara; Viljo K. - Mississauga Ontario CA
- Valavaara; Viljo K. - Don Mills CA
- Valavaara; Viljo K. - Ontario CA
- Valavaara; Viljo K. - Milton CA
| Patent | Date |
|---|---|
| Low head turbine Grant 5,921,745 - Round , et al. July 13, 1 | 1999-07-13 |
| Rotary engine and method of operation Grant 5,720,251 - Round , et al. February 24, 1 | 1998-02-24 |
| Rotary pump having inner and outer components having abutments and recesses Grant 5,658,138 - Round , et al. August 19, 1 | 1997-08-19 |
| Fluid end Grant 5,059,101 - Valavaara October 22, 1 | 1991-10-22 |
| Rotary drive having inner and outer interengaging rotors Grant 4,932,850 - Valavaara June 12, 1 | 1990-06-12 |
| Rotary pressure intensifier Grant 4,734,013 - Valavaara March 29, 1 | 1988-03-29 |
| Double-bladed power hacksaw Grant 4,619,166 - Valavaara October 28, 1 | 1986-10-28 |
| Hydrostatic transmissions Grant 4,495,768 - Valavaara January 29, 1 | 1985-01-29 |
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