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| All Patents in class 55/285 | |||||
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| Number | Date | Patentee | Title | Type | |
| 711,760 | Oct. 21, 1902 | E.R. Draver | Dust-collector | ||
| 720,791 | Feb. 17, 1903 | E.R. Draver | Dust-collector | ||
| 721,360 | Feb. 24, 1903 | E.R. Draver | Dust-collector | ||
| RE12,102 | Mar. 17, 1903 | O.M. Morse | Dust-collector | waste collection mechanisms | |