Thunderbolt Siren Series: Difference between revisions
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== Other models == | == Other models == | ||
[[Category:Electromechanical sirens]][[Category:Supercharged sirens]][[Category:Federal Signal]] | [[Category:Electromechanical sirens]][[Category:Supercharged sirens]][[Category:Federal Signal]][[Category:Rotating sirens]] | ||
Revision as of 01:25, 13 December 2013
The Thunderbolt siren was a supercharged electromechanical siren produced by Federal Electric, later Federal Sign & Signal and Federal Signal.