File:USpatent1457147 1922.gif
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Size of this preview: 587 × 600 pixels. Other resolutions: 235 × 240 pixels | 470 × 480 pixels | 752 × 768 pixels | 1,002 × 1,024 pixels | 1,467 × 1,499 pixels.
Original file (1,467 × 1,499 pixels, file size: 57 KB, MIME type: image/gif)