DE287769C - - Google Patents

Info

Publication number
DE287769C
DE287769C DENDAT287769D DE287769DA DE287769C DE 287769 C DE287769 C DE 287769C DE NDAT287769 D DENDAT287769 D DE NDAT287769D DE 287769D A DE287769D A DE 287769DA DE 287769 C DE287769 C DE 287769C
Authority
DE
Germany
Prior art keywords
clamping
soundboard
ring
marked
pressed
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
Application number
DENDAT287769D
Other languages
German (de)
English (en)
Publication of DE287769C publication Critical patent/DE287769C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Drawing Aids And Blackboards (AREA)
DENDAT287769D Active DE287769C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE287769C true DE287769C (enrdf_load_stackoverflow)

Family

ID=542963

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT287769D Active DE287769C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE287769C (enrdf_load_stackoverflow)

Similar Documents

Publication Publication Date Title
DK0564319T3 (da) Nyt gaufreret, flerlaget papir, indretning og fremgangsmåde til dets udarbejdelse
DE60213991T2 (de) Vorrichtung und verfahren zum stanzen
DE287769C (enrdf_load_stackoverflow)
DE366178C (enrdf_load_stackoverflow)
DE24901C (de) Neuerung an Matrizen zum Prägen von Metallplatten
DE35368C (de) Schmiedeiserne Roststäbe
FR2364098A1 (fr) Perforateur pour papier a lettres ou documents analogues
DE253974C (enrdf_load_stackoverflow)
DE228269C (enrdf_load_stackoverflow)
DE32394C (de) Neuerung an mehrcylindrigen Compound-Dampfmaschinen
DE636480C (de) Einrichtung zum Befestigen einer verstellbaren Saegegatterlehre in Form einer Spule o. dgl.
DE185504C (enrdf_load_stackoverflow)
DE5082C (de) Metallstopfbüchse
DE44979C (de) Sireichinstrument
DE34870C (de) Blendvorrichtung für Mikroskope
DE44614C (de) Combinirter Notenhalter, Tondämpfer und Bogenführer für Streichinstrumente
DE70462C (de) Wandtafelgestell
DE337708C (de) Rueckwand fuer Rollfilmklappkameras
DE34480C (de) Taschenlaterne
DE209120C (enrdf_load_stackoverflow)
US908175A (en) Music-roll-perforating mechanism.
DE376279C (de) Klammer mit federnder Klemmzunge
SU268364A1 (ru) Способ получени точных отверстий в листовом материале
DE54006C (de) Rübenschnitzelmesser
DE53157C (de) Abtrittdeckel mit Urintrichter