"Roentgen" induction coils and other X-ray apparatus (1904)
James G. Biddle Company · Philadelphia : James G. Biddle · leaf 55
. St. Josephs Hospital, Baltimore, Md 18 Roentgen Coil with self-starting mechanical interrupter;operated by motor-generator from no v. alternating current. Dr. W. G. Erving Washington, D .C. 18 Roentgen Coil with electrolytic interrupter; operated fromno v. direct current. U. S. Post Hospital,… … Figure 36. A 20 Roentgen Coil mounted on special cabinet with switch-board, etc.; as made for Dr. A. W. Goodspeed, University of Penn-sylvania, Philadelphia. James (i. Biddle, 1114 Chestnut Street, Philadelphia. 51 Barnard Sanitarium Baltimore, Md. 15 Roentgen Coil with self-starting mechanical…
X-rays · Induction coils · Radiography
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