File:Hutchison Patent US923122 Mechanically Actuated Diaphragm Horn or Alarm.jpg
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editDescriptionHutchison Patent US923122 Mechanically Actuated Diaphragm Horn or Alarm.jpg |
Deutsch: Patent erteilt am 25. Mai 1909 |
Date | |
Source | United States Patent Office |
Author | Miller Reese Hutchison (1876-1944) |
Licensing
editPublic domainPublic domainfalsefalse |
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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.
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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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current | 20:36, 10 September 2021 | ![]() | 900 × 1,340 (223 KB) | HH58 (talk | contribs) | Uploaded a work by Miller Reese Hutchison (1876-1944) from United States Patent Office with UploadWizard |
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Software used | ACDSee 15 |
File change date and time | 20:59, 10 September 2021 |
Y and C positioning | Centered |
DateTime subseconds | 560 |