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![Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] . FIG. 3.—MAGNETO BELL.. FIG. 4. —MAGNETO GENERATOR ASSEMBLED. FIG. 5. —MAGNETO GENERATOR DISSECTED. APPARATUS OF THE](https://c8.alamy.com/comp/2CRX2N5/telephones-and-telegraphs-1902-and-municipal-electric-fire-alarm-and-police-patrol-systems-fig-3magneto-bell-fig-4-magneto-generator-assembled-fig-5-magneto-generator-dissected-apparatus-of-the-substation-37-the-series-method-in-electric-ughting-with-arc-lampsand-the-multiple-or-parallel-method-of-lighting-withincandescent-lamps-the-older-or-series-type-oftelephone-is-usually-provided-with-a-bell-of-compara-tively-low-resistancethat-is-60-to-80-ohmsand-amagneto-generator-having-its-armature-normallyshunted-when-not-in-use-for-ring-signaling-withthe-best-arrangemen-2CRX2N5.jpg "Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] . FIG. 3.—MAGNETO BELL.. FIG. 4. —MAGNETO GENERATOR ASSEMBLED. FIG. 5. —MAGNETO GENERATOR DISSECTED. APPARATUS OF THE")
Telephones and telegraphs: 1902 : [and Municipal electric fire alarm and police patrol systems] . FIG. 3.—MAGNETO BELL.. FIG. 4. —MAGNETO GENERATOR ASSEMBLED. FIG. 5. —MAGNETO GENERATOR DISSECTED. APPARATUS OF THE
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