File:Loughead1917HydraulicBrakePatent.pdf

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Original file (1,275 × 1,650 pixels, file size: 463 KB, MIME type: application/pdf, 4 pages)

Summary

Description
English: Malcolm Loughead's 1917 patent application for his hydraulic braking system
Date
Source United States Patent and Trademark Office
Author Malcolm Loughead

Licensing

Public domain The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s)

The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.

Captions

Malcolm Loughead's 1917 patent application for his hydraulic braking system

22 January 1917Gregorian

application/pdf

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Date/TimeThumbnailDimensionsUserComment
current06:03, 22 November 2025Thumbnail for version as of 06:03, 22 November 20251,275 × 1,650, 4 pages (463 KB)RandFreemanUploaded a work by Malcolm Loughead from United States Patent and Trademark Office with UploadWizard

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