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IN MEMORIAM. FRED A. HUMPHREY, M.D. 1896 - 1989.

1989.jpg Page 1.ThumbnailsIrl C. Martin's patent for a permanent magnetic generator (PMG).Page 1.ThumbnailsIrl C. Martin's patent for a permanent magnetic generator (PMG).Page 1.ThumbnailsIrl C. Martin's patent for a permanent magnetic generator (PMG).Page 1.ThumbnailsIrl C. Martin's patent for a permanent magnetic generator (PMG).
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