WILLIAM D. COOLIDGE - CLIPPED SIGNATURE - HFSID 17802
Price: $90.00
WILLIAM D. COOLIDGE. Signature: "W.D. Coolidge", 4¼x1¾. A collector has penned: "Electrical Inventor" at the
lower right edge. Coolidge's name is inseparably linked with the X-ray tube,
popularly called the "Coolidge tube". This invention completely revolutionized
the generation of X-rays and remains the model upon which all X-ray tubes for
medical applications are patterned. Fine condition.
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