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Patents for Oscar E. Tengdin Jr.
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
1,369,143	Feb. 22, 1921	C.G. Tengdin	Spud Wrench	pipe wrenches
CA-231,927	Jun. 12, 1923	C.G. Tengdin	Spud Wrench	pipe wrenches

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