File:Cross–sections of lenses according to Univis's U.S. Patent No. 1,845,940.jpg
![File:Cross–sections of lenses according to Univis's U.S. Patent No. 1,845,940.jpg](http://upload.wikimedia.org/wikipedia/en/thumb/c/cf/Cross%E2%80%93sections_of_lenses_according_to_Univis%27s_U.S._Patent_No._1%2C845%2C940.jpg/311px-Cross%E2%80%93sections_of_lenses_according_to_Univis%27s_U.S._Patent_No._1%2C845%2C940.jpg?20160607002727)
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Summary
editDescription |
This is a patent drawing of the lenses involved in United States v. Univis Lens Co. |
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Source |
Drawing in U.S. Patent No. 1,845,940 |
Date |
1932 |
Author |
Nathan M Stanley |
Permission (Reusing this file) |
See below.
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Licensing
edit![]() | The text and illustrations of US patents are in the public domain in the United States unless the patent text contains a specific notice that portions are copyrighted.[1][2][3]
The original patent contains no such notice, so its contents are in the public domain in the United States. |
File history
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current | 00:27, 7 June 2016 | ![]() | 998 × 1,923 (164 KB) | PraeceptorIP (talk | contribs) | Uploading a public-domain item using File Upload Wizard |
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File usage
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