File:USpatent1782892 1928.gif
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Size of this preview: 389 × 599 pixels. Other resolutions: 156 × 240 pixels | 311 × 480 pixels | 498 × 768 pixels | 665 × 1,024 pixels | 1,297 × 1,998 pixels.
Original file (1,297 × 1,998 pixels, file size: 124 KB, MIME type: image/gif)