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AT147914B Expired / Lapsed AT ⏱️ 0.0 years remaining

Rotatable steel helmet.

Assignee: Karl Braun
•
Filing: 1936-03-13
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Granted: 1936-11-25
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Expires: 1956-03-13
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Abstract

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Inventors

  • 👤 Karl Braun

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Data Source google_patents
Last Synchronized 2026-10-27 16:43
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