Rowland Retrum

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Kirkwood, MO, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for hydrolyzing keratinaceous material
- Patent number 4,286,884
- Issue date Sep 1, 1981
- Rowland Retrum
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
Information Patent Grant
Method and apparatus for hydrolyzing keratinaceous material
- Patent number 4,231,926
- Issue date Nov 4, 1980
- Rowland Retrum
- A23 - FOODS OR FOODSTUFFS THEIR TREATMENT, NOT COVERED BY OTHER CLASSES