Douglas L. Swanson

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McKean, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Programmable multiple position machine
- Patent number 4,469,993
- Issue date Sep 4, 1984
- Swanson Systems, Inc.
- Douglas L. Swanson
- G05 - CONTROLLING REGULATING
Information Patent Grant
Programmable multiple position machine
- Patent number 4,404,505
- Issue date Sep 13, 1983
- Swanson Systems, Inc.
- Douglas L. Swanson
- G05 - CONTROLLING REGULATING