File:USpatent188007 188007.png
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![File:USpatent188007 188007.png](https://upload.wikimedia.org/wikipedia/commons/thumb/b/be/USpatent188007_188007.png/396px-USpatent188007_188007.png?20050513152238)
Size of this preview: 396 × 600 pixels. Other resolutions: 158 × 240 pixels | 317 × 480 pixels | 989 × 1,498 pixels.
Original file (989 × 1,498 pixels, file size: 67 KB, MIME type: image/png)