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| Patents for Frederick William Schroeder | |||||
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| Picture | Number | Date | Patentee | Title | |
 | GB-190,308,672 | Feb. 18, 1904 | F.W. Schroeder | Improvements in Ratchet Spanners for Screw Bolts and Nuts, Nipples, and the like, and the Combination thereof with other Tools or Implements | |
 | 794,952 | Jul. 18, 1905 | F.W. Schroeder | Ratchet Spanner for Screw Bolts, etc. | |
 | GB-190,425,990 | Nov. 02, 1905 | F.W. Schroeder | Improvements in Ratchet Spanners or Braces | |
 | CA-98,728 | Apr. 24, 1906 | F.W. Schroeder | Ratchet Spanner | |