Patents for Thomas Whitfield and Co.


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Patents for Thomas Whitfield and Co.
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
GB-186,400,206	Jan. 25, 1864	W.D. Grimshaw	Atmospheric Hammer	power hammers
45,896	Jan. 10, 1865	W.D. Grimshaw	Atmospheric Hammer	power hammers