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| All Patents in class 239/428 | |||||
| Picture | Number | Date | Patentee | Title | |
| 1,790,892 | Feb. 03, 1931 | E.T. Adams | Internal Combustion Engine | ||
| 2,176,682 | Oct. 17, 1939 | I.P. Pedrick | Method and Apparatus for Washing | ||
![]() | 2,829,006 | Apr. 01, 1958 | I.O. Johansson | Spray coating means | |