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All Patents in class 454/284 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 587,373 | Aug. 03, 1897 | H.L. Parker, C.R. Meston | Window-blower | |
2,117,529 | May 17, 1938 | D.D. Wile | Temperature Control Apparatus |