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| All Patents in class 415/99 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 270,897 | Jan. 23, 1883 | C. Hammelmann | Fan-blower | |
| 887,908 | May 19, 1908 | C.P. Barby | Apparatus for Shielding Vehicles form Dust | ||
| 940,257 | Nov. 16, 1909 | C.V. Kerr | Centrifugal Pump | ||
 | 1,906,533 | May 02, 1933 | J. Burke | Air circulating device | |
 | 3,057,417 | Oct. 09, 1962 | R.L. Sandvig | Drill system with suction removal of cuttings | |