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| All Patents in class 55/356 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,868,519 | Jul. 26, 1932 | A.A. Breuer | Portable suction cleaner | |
| 2,001,121 | May 14, 1935 | A.A. Breuer | Portable suction cleaner | ||
 | 2,316,836 | Apr. 20, 1943 | A.A. Breuer | Portable suction cleaner | |
 | 2,475,815 | Jul. 12, 1949 | G.C. Burd | Vacuum cleaning device | |
 | 2,703,152 | Mar. 01, 1955 | W.L. Petersen | Suction cleaner | |
 | 2,990,032 | Jun. 27, 1961 | R.L. Sandvig | Separator for use with rock drills | |