USD176046S - Crash helmet - Google Patents

Crash helmet Download PDF

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Publication number
USD176046S
USD176046S US D176046 S USD176046 S US D176046S
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US
United States
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crash helmet
helmet
crash
feb
patents
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Jacques Spreiregen
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fld States Patent O Des. 176,046
PAGE 2 References Cited in the file of this patent UNITED STATES PATENTS D. 171,398 Grancsay et a1. Feb. 2, 1954 2,340,872 Flynn .et a1. Feb. 8, 1944 2,618,780 Cushman Nov. 25, 1952 2,688,747. Marx Sept. 14, 1954 FOREIGN PATENTS 486,752 Germany Dec. 21, 1926

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