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Publication numberUS391940 A
Publication typeGrant
Publication dateOct 30, 1888
Filing dateAug 7, 1883
Publication numberUS 391940 A, US 391940A, US-A-391940, US391940 A, US391940A
InventorsHimself Axd haeeisoisr Tuthill
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Haeey brooks
US 391940 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No Model.)

H. BROOKS.

TOUGH REGULATING RAIL POR PIANUS 0R ORGANS. No. 391,940.

Patented Oct. 30, 1888.

hm/Q, Inventor.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4381691 *Jan 9, 1981May 3, 1983Baldwin Piano & Organ CompanyTouch force adjustment means for a piano
US7847173 *May 18, 2009Dec 7, 2010Pitchlock Inc.Compact device for adjusting piano key touch weight
US20100288103 *May 18, 2009Nov 18, 2010PitchLock IncorporatedCompact device for adjusting piano key touch weight
Classifications
Cooperative ClassificationG10C3/12