DE88453C - - Google Patents
Info
- Publication number
- DE88453C DE88453C DENDAT88453D DE88453DA DE88453C DE 88453 C DE88453 C DE 88453C DE NDAT88453 D DENDAT88453 D DE NDAT88453D DE 88453D A DE88453D A DE 88453DA DE 88453 C DE88453 C DE 88453C
- Authority
- DE
- Germany
- Prior art keywords
- bellows
- pedal
- spring
- button
- valve mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000694 effects Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
- G10C3/00—Details or accessories
- G10C3/12—Keyboards; Keys
- G10C3/14—Keyboards; Keys for playing by the feet
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Toys (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE88453C true DE88453C (https=) |
Family
ID=360342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT88453D Active DE88453C (https=) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE88453C (https=) |
-
0
- DE DENDAT88453D patent/DE88453C/de active Active
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