"Roentgen" induction coils and other X-ray apparatus (1904)
James G. Biddle Company · Philadelphia : James G. Biddle · leaf 16
cted quartered oak, as desired. Prices. B2998. 20 Type A Coil for 20 volts D. C $450.00 B2999. 2Q// Type A Coil for no volts D. C 450.00 B3000. 18 Type A Coil for 20 volts D. C 400.00 B3001. 18 Type A Coil for no volts D. C 400.00 B3002. 15 Type A Coil for 20 volts DC 325.00 B3003. 15 Type A Coil… … FlGURK 4 Type A Coil with Table and Rheostat. Prices. B3010. 20 Type A Coil with table and rheostat for 20 v., $500.00 B3011. 20 Type A Coil with table and rheostat for no v., 500.00 B3006. 18 Type A Coil with table and rheostat for 20 v., 450.00 B3007. 18 Type A Coil with table and rheostat for no…
X-rays · Induction coils · Radiography
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten07unit-855-554.webp)
