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File card container
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Electric pencil sharpener
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Expansible spring-loaded retention clamp for books or other objects
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Multi-range weight scale
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Sonar depth finder with relative depth LCD display
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Adjustable wind direction devices
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Wall mounted telephone index
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Time delay mechanism for pencil sharpener
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Automatic letter opening device
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Automatic letter opener
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Automatic tape dispenser
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Shredder
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Compass
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Memo pad
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Cube calendar
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Spring-type weigher with parallelogram linkage
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Desk indexing device
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Perpetual calendar
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Marine speedometer
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Mechanism for changing dates for desk calendar
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