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| Patents for David A. McIntosh | |||||
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| Picture | Number | Date | Patentee | Title | |
 | CA-163,594 | Jul. 06, 1915 | D.A. McIntosh | Retort for heating cans | |
| 1,151,111 | Aug. 24, 1915 | D.A. McIntosh | Can-heating retort | ||
| CA-208,000 | Jan. 25, 1921 | W. Bandy, D.A. McIntosh | Oscillating clutch | ||
| CA-255,782 | Nov. 24, 1925 | D.A. McIntosh | Shingle machine set work | ||
| CA-286,312 | Jan. 08, 1929 | G.M. Letson, D.A. McIntosh | Derrick conveyer | ||