"Roentgen" induction coils and other X-ray apparatus (1904)
James G. Biddle Company · Philadelphia : James G. Biddle · leaf 4
ctrometers, etc. Siemens & Halske, Berlin, Manufacturers of Electrical Instruments, including DuBois-RubensArmored Galvanometers, Dubois Magnetic Precision Balance, ChatelierPyrometer, etc. Cambridge Scientific Instrument Co., England, Manufacturers of Apparatus for Physical Laboratories,… … JAMES C. BIDDLE, General Sales Agent, 1112-1114 Chestnut Street, (STAFFORD BUILDING, SIXTH FLOOR) PHILADELPHIA, U. S. A.
X-rays · Induction coils · Radiography
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