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| All Patents in class 417/423.2 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,776,778 | Sep. 30, 1930 | A.A. Breuer | Combined blower and suction device | |
| 1,792,570 | Feb. 17, 1931 | A.A. Breuer | Blackboard-eraser cleaner | ||
 | 1,868,519 | Jul. 26, 1932 | A.A. Breuer | Portable suction cleaner | |
 | 2,172,135 | Sep. 05, 1939 | A.A. Breuer | Suction cleaner motor construction | |
 | 2,422,968 | Jun. 24, 1947 | J.P. Jason | Suction-blower device | |
 | 4,120,616 | Oct. 17, 1978 | N.M. Dwyer, J.A. Rasins | Vacuum cleaner-blower assembly with sound absorbing arrangement | |