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| All Patents in class 16/211 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 216,767 | Jun. 24, 1879 | F.S. Clarkson, F.B. Sloan | Improvement in sash-cord guides | |
 | 347,507 | Aug. 17, 1886 | F.V. Phillips | Sash-cord guide | |
 | 374,158 | Nov. 29, 1887 | F.V. Phillips | Sash-cord guide | |
 | 481,510 | Aug. 23, 1892 | F.V. Phillips | Sash-pulley | |
| 828,698 | Aug. 14, 1906 | L. Zamboni | Pulley-frame | ||
| 828,699 | Aug. 14, 1906 | R.H. Bowen, L. Zamboni | Pulley-frame | ||
| 2,276,881 | Mar. 17, 1942 | F. Schimmel | Counterbalanced window sash | ||