US Patent: 2,869,409
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| Slidable Jaw Wrench with Worm Latching Means
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Patentees:
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| John E. Swanstrom (exact or similar names) - Duluth, MN |
| Wade Hampton Connell (exact or similar names) - Duluth, MN |
| Joseph Fenimore Cooper (exact or similar names) - Duluth, MN |
| Swan Elmer Swanson (exact or similar names) - Duluth, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Apr. 22, 1957 |
| Granted: |
Jan. 20, 1959 |
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Stan Schulz
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Description: |
| Williamson, Schroeder, Adams & Meyers - patent attorneys
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