File:USpatent30838 1860.gif
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Size of this preview: 781 × 600 pixels. Other resolutions: 313 × 240 pixels | 625 × 480 pixels | 1,000 × 768 pixels | 1,026 × 788 pixels.
Original file (1,026 × 788 pixels, file size: 31 KB, MIME type: image/gif)