All Patents in class 406/4


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All Patents in class 406/4
Patents 1 - 3 of 3
Number	Date	Patentee	Title	Type
696,305	Mar. 25, 1902	T. Bemis	Pneumatic-despatch-tube system
712,478	Nov. 04, 1902	T. Bemis	Pneumatic-despatch-tube system
712,479	Nov. 04, 1902	T. Bemis	Pneumatic-despatch-tube system