Adjustable device with a musical keyboard stand

Supports – Stand – Plural leg

Reexamination Certificate

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Details

C248S171000, C108S118000

Reexamination Certificate

active

06923416

ABSTRACT:
An adjustable device includes a first disk mounted on a side of the first stand to have a finger hole to movably receive therein a finger, a second disk mounted on a side of the second stand to combine the first disk and having multiple adjusting holes defined in a peripheral edge of the second disk to allow an extension of the finger and a sliding plate sandwiched between the first disk and the second disk and movable between a first position where a free end of the finger is detachably engaged with a free end of the sliding plate and a second position where the free end of the finger is separated from the sliding plate and is received in a very last adjusting hole of the second disk, in which a relative angle between the first stand and the second stand is maximum.

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patent: 4431179 (1995-01-01), None

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