Fredrick W. Tryan

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Lewiston, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Brush speed sensing control for vacuum cleaner
- Patent number 4,328,522
- Issue date May 4, 1982
- Lake Center Industries
- Fredrick W. Tryan
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...