File:Frizell patent.png

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Description
Français : Croquis de l'illustration du brevet de Frizell. (Reproduit de la publication Experiments on the Compression of Air by Direct Action of Water de J. P. Frizell, 1880).
English: Sketch of Frizell's patent drawing. (Reproduced from publication Experiments on the Compression of Air by Direct Action of Water by J. P. Frizell, 1880).
Date
Source Hydraulic air compressors, published by the United States Department of the Interior
Author Leroy E. Schulze

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Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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current20:47, 25 June 2018Thumbnail for version as of 20:47, 25 June 2018972 × 1,608 (237 KB)Borvan53 (talk | contribs)User created page with UploadWizard

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