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Summary

Description Christian Hülsmeyer Patent zur Ortung metallischer Objekt. Christian Hülsmeyer Patent for detecting metallic objects.
Date
Source Deutsches Marken und Patentamt German patent search system - look for Patent DE165546
Author Deutsches Marken und Patentamt
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Licensing

Public domain This image is in the public domain according to German copyright law because it is part of a statute, ordinance, official decree or judgment (official work) issued by a German authority or court (§ 5 Abs.1 UrhG).

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Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
 Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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inception

30 April 1904Gregorian

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checksum

4e58b823f48cfc13f271c6bf8a971a7943636044

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Date/TimeThumbnailDimensionsUserComment
current08:17, 21 September 2021Thumbnail for version as of 08:17, 21 September 20212,074 × 1,630 (552 KB)Andreas Schwarzkopfausgefleckt
08:11, 21 September 2021Thumbnail for version as of 08:11, 21 September 20212,074 × 1,630 (382 KB)Andreas SchwarzkopfFile:DE165546.pdf cropped 20 % horizontally, 53 % vertically using CropTool with precise mode.

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