Patents for L. C. Downing


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Patents for L. C. Downing
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,180,326	Apr. 25, 1916	C.E. Shields	Process of casting steel articles	making vises
1,180,448	Apr. 25, 1916	C.E. Shields	Power-grinder	grindstone frames