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| Patents for Mary F. Allen | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 927,988 | Jul. 13, 1909 | T.C. Massey | Vise | |
 | 1,021,372 | Mar. 26, 1912 | G.R. Mesnard | Pliers for Cotter Pins, Wire, etc. | |
 | 1,028,720 | Jun. 04, 1912 | J.W. Hasburg | Marking-Gage or Tram | |
 | 1,108,591 | Aug. 25, 1914 | F. Bach, K. Leissle | Wrench | |