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All Patents in class 248/121 | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 612,097 | Oct. 11, 1898 | H.R. Goodwin | Accessory For Use In Conjunction With Air Pumps | |
![]() | 2,321,503 | Jun. 08, 1943 | F.C. Moran | Bench Vise |