US3492701A
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Paper clamp
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US3404685A
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Ring binder
|
US3373749A
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Binders or holders for books
|
US3224792A
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Supporting prop or leg for book or binder
|
US3191604A
|
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Sheet lifters for loose leaf binders
|
US3098490A
|
|
Loose leaf ring binder
|
US3098489A
|
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Loose leaf binder construction
|
US3101719A
|
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Loose leaf binder
|
US2996775A
|
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Paper clip and pencil holder
|
US2463833A
|
|
Loose-leaf sheet and the like
|
US2435521A
|
|
Loose-leaf book construction
|
US2334800A
|
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Loose-leaf book construction
|
US2322180A
|
|
Loose-leaf book construction
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