BE354921A - - Google Patents

Info

Publication number
BE354921A
BE354921A BE354921DA BE354921A BE 354921 A BE354921 A BE 354921A BE 354921D A BE354921D A BE 354921DA BE 354921 A BE354921 A BE 354921A
Authority
BE
Belgium
Prior art keywords
air
valve
devices
diaphragm
valves
Prior art date
Application number
Other languages
English (en)
French (fr)
Publication of BE354921A publication Critical patent/BE354921A/fr

Links

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10FAUTOMATIC MUSICAL INSTRUMENTS
    • G10F1/00Automatic musical instruments
    • G10F1/02Pianofortes with keyboard

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Multiple-Way Valves (AREA)
BE354921D BE354921A (enExample)

Publications (1)

Publication Number Publication Date
BE354921A true BE354921A (enExample)

Family

ID=29255

Family Applications (1)

Application Number Title Priority Date Filing Date
BE354921D BE354921A (enExample)

Country Status (1)

Country Link
BE (1) BE354921A (enExample)

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