Patents for Sarah T. Frommeyer


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Patents for Sarah T. Frommeyer
Patents 1 - 2 of 2
Picture	Number	Date	Patentee	Title
	1,037,735	Sep. 03, 1912	H.E. Derbyshire	Safety-latch for board drop-hammers
	1,068,225	Jul. 22, 1913	H.E. Derbyshire	Drop-hammer roll-release mechanism