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Summary

Description
English: From United States Patent and Trademark Office, 1,155,243
Date
Source https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/1155243
Author United States Patent and Trademark Office

Licensing

Public domain
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:PatentAndersJordahl.png

Captions

Patent drawing for Anders Jordahl anchor channel with channel bolt

Items portrayed in this file

depicts

28 September 1915Gregorian

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