File:USpatent671257 1900.gif
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![File:USpatent671257 1900.gif](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a2/USpatent671257_1900.gif/355px-USpatent671257_1900.gif?20050309065535)
Size of this preview: 355 × 599 pixels. Other resolutions: 142 × 240 pixels | 284 × 480 pixels | 698 × 1,177 pixels.
Original file (698 × 1,177 pixels, file size: 25 KB, MIME type: image/gif)