US Patent: 811,094
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| Mattress
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Patentee:
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| William Robertson (exact or similar names) - Chicago, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 17, 1904 |
| Granted: |
Jan. 30, 1906 |
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Jeff Joslin
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Description: |
| The inventor was a "subject of the King of Great Britain". |
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