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United States Utility Patents
4,091,480 - 4,091,489

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NumberTitle
4,091,480 Hospital mattress with removable insert
4,091,481 Tooth pillow
4,091,482 Inflatable sleeping bag
4,091,483 Hose clamp tool
4,091,484 Collapsible boat canopy and storage compartment therefor
4,091,485 Collapsible structure
4,091,486 Punch knock-out mechanism for header
4,091,487 Method for binding books
4,091,488 Dockboard utilizing a gas spring for counterbalancing
4,091,489 Brush pointer



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