Donald A. Springer

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North Ridge, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Food preparation process
- Patent number 4,323,110
- Issue date Apr 6, 1982
- Anchor Hocking Corporation
- Harry A. Rubbright
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Food preparation apparatus
- Patent number 4,254,824
- Issue date Mar 10, 1981
- Anchor Hocking Corporation
- Donald A. Springer
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Food serving tray for use in a food preparation unit
- Patent number 4,232,789
- Issue date Nov 11, 1980
- Anchor Hocking Corporation
- Donald A. Springer
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Food preparation apparatus and process
- Patent number 4,203,486
- Issue date May 20, 1980
- Anchor Hocking Corporation
- Harry A. Rubbright
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Food serving tray and supporting heater shelf
- Patent number 4,194,109
- Issue date Mar 18, 1980
- Messer Griesheim GmbH.
- Donald A. Springer
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...