 Light-Signal Apparatus, US952420A by Gustaf Dalén

ID: light-signal-apparatus-us952420a-by-gustaf-dalen

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Light-Signal Apparatus, US952420A by Gustaf Dalén by

Codex  0 Created 2026-10-18 Updated 2026-11-05

Inventor: Gustaf Dalén. US952420A, filed 4 January and published 15 March 1910. Describes grouped flashing apparatus. Google Patents hosts the specification.

patents.google.com/patent/US952420A/en

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