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| All Patents in class 55/449 | |||||
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| Number | Date | Patentee | Title | Type | |
| 397,048 | Jan. 29, 1889 | E. Bretney | Dust-collector | waste collection mechanisms | |
| 6,027,541 | Feb. 22, 2000 | M.B. Siemers | Lid for auxiliary dust removal receptacle | ||
| 6,210,457 | Apr. 03, 2001 | M.B. Siemers | Transparent lid for auxiliary dust removal receptacle | ||