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| Patents for David Wentworth Robb | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,513,425 | Oct. 28, 1924 | D.W. Robb | Air-heating attachment for furnaces | |
 | 1,698,563 | Jan. 08, 1929 | D.W. Robb | Boiler | |