Adjustable dumbbell and system
Article holder
Article holder
Back plate and file cover for ring binder
Binder for perforated sheets
Binder for perforated sheets or the like
Binder ring
Binder ring having slip-on folio stops
Binding mechanism for perforated papers
Binding system
Board for writing with pen producing erasable marking, the board
Booklet binding system
Carrier for hinged support of pages
Chuck key and extension member for a chuck key
Clip-on paper holding system
Closure for wire loop binder
Collapsible ring binder and uses thereof
Composite looseleaf mechanism
Device for retaining sheets files or punched cards in binders or
Fastener for detachably interconnecting punched documents