All Patents in class 72/112


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All Patents in class 72/112
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
444,721	Jan. 13, 1891	J.H. Bevington	Spinning Tube	metal spinning machines
2,787,796	Apr. 09, 1957	J. Rosan	Method of Converting Standard Threads into Locking Threads	machining