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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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