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Inventor: Rotherham; Donald A.
Address: Williston Park, NY
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 4990017 |
Expandable double ring binder |
February 5, 1991 |
| An expandable double ring binder for carrying and displaying swatches of material samples includes a pair of loose leaf ring metals slidably mounted on a carriage attached to the inside of the backbone of a loose leaf binder case, such that the ring metals may be spread apart laterally |
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