Andrew Oscar Siren

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Calgary, Alberta, CA

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Patents Grantslast 30 patents

Information Patent Grant
All-terrain amphibian vehicle
- Patent number 4,878,451
- Issue date Nov 7, 1989
- Andy O. Siren
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Automatic synchronized pitch controls for pairs of driver and drive...
- Patent number 3,964,327
- Issue date Jun 22, 1976
- Andrew Oscar Siren
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...