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| Patents for William Douglas Westman | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-4,825 | Jun. 05, 1875 | W.D. Westman | Improvements on scroll saw | scrollsaws | |
| CA-6,943 | Jan. 09, 1877 | W.D. Westman | Improvement on first and intermediate drivers | industrial machine pulleys and belt drive mechanisms | |
| CA-13,814 | Dec. 13, 1881 | W.D. Westman | Improvement on first and intermediate drivers | industrial machine pulleys and belt drive mechanisms | |