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| All Patents in class 297/170 | |||||
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| Number | Date | Patentee | Title | Type | |
| 633,323 | Sep. 19, 1899 | W.K. Loughborough | Table or Desk Attachment for Chairs or Seats | chairs | |
| 784,050 | Mar. 07, 1905 | J.W. Johnston | School-desk | desks and tables | |