Title:
Spring binder post
United States Patent 1462925

Inventors:
William, Wilburger
Publication Date:
07/24/1923
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Assignee:
William, Wilburger
Primary Class:
402/53
Other Classes:
267/180, 411/374, 402/57, 267/179, 56/50, 411/438, 402/58, 411/16, 267/69
International Classes:
B42F13/02; B42F13/00