Roger Swanson

Follow

Person

Geneva, IL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Method of processing cattle excrement
- Patent number 4,070,175
- Issue date Jan 24, 1978
- Babson Bros. Co.
- Roger Swanson
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Method of and apparatus for processing cattle excrement
- Patent number 3,971,720
- Issue date Jul 27, 1976
- Babson Brothers Company
- Roger Swanson
- C05 - FERTILISERS MANUFACTURE THEREOF