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Patents for Frances M. Frost | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 864,325 | Aug. 27, 1907 | C.B. McDonald | Can-forming machine | |
![]() | 938,165 | Oct. 26, 1909 | C.B. McDonald | Can-testing machine | |
![]() | 1,017,408 | Feb. 13, 1912 | E.M. Graham | Jaws for Chucks | |
![]() | 1,141,679 | Jun. 01, 1915 | W.A. Barker | Electrically-driven hoist |