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built by Melvin Hofer of Freeman, South Dakota |
built by Melvin Hofer of Freeman, South Dakota |
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built by Melvin Hofer of Freeman, South Dakota |
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"Beamer" Stirling Cycle Engines built by Students at North Dakota State College of Science in Wahpeton, North Dakota |
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built by Norm Hayden of Seattle, Washington |
built by Bob Verhaeghe of Merritt, North Carolina |
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built by John Mallak of Hutchinson, Minnesota 10/08 |
built by John Mallak of Hutchinson, Minnesota 10/08 |
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built by Roger Cherrington of New Ulm, Minnesota 12/08 |
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Key & Sounder built by John Mallak of Hutchinson, Minnesota 07/09 |
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