GB246728A - Improvements in electrostatic telephones - Google Patents

Improvements in electrostatic telephones

Info

Publication number
GB246728A
GB246728A GB18526/25A GB1852625A GB246728A GB 246728 A GB246728 A GB 246728A GB 18526/25 A GB18526/25 A GB 18526/25A GB 1852625 A GB1852625 A GB 1852625A GB 246728 A GB246728 A GB 246728A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
telephones
condenser
electrostatic
rigid
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.)
Expired
Application number
GB18526/25A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRI ERGON AG
Original Assignee
TRI ERGON AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TRI ERGON AG filed Critical TRI ERGON AG
Publication of GB246728A publication Critical patent/GB246728A/en
Expired 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
    • H04R19/00—Electrostatic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
GB18526/25A 1925-04-07 1925-07-20 Improvements in electrostatic telephones Expired GB246728A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE246728X 1925-04-07

Publications (1)

Publication Number Publication Date
GB246728A true GB246728A (en) 1926-02-04

Family

ID=5935188

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18526/25A Expired GB246728A (en) 1925-04-07 1925-07-20 Improvements in electrostatic telephones

Country Status (4)

Country Link
US (1) USRE17257E (enExample)
FR (1) FR601369A (enExample)
GB (1) GB246728A (enExample)
NL (1) NL17774C (enExample)

Also Published As

Publication number Publication date
FR601369A (fr) 1926-03-01
NL17774C (enExample)
USRE17257E (en) 1929-04-02

Similar Documents

Publication Publication Date Title
GB246728A (en) Improvements in electrostatic telephones
US1142044A (en) Shock-absorber.
CA127599A (en) Suspenders
FI4410A (fi) Strykanordning på finkvarnar med en löpande, ävensom en fastsittande, med en skålartad fördjupning försedd kvarnsten
Rice The recompense of the American loyalists by the British government
CA167242A (en) Metallic amides, cyanamides and cyanides
CA149656A (en) Elastic webbing
CA130412A (en) Suspender
JAA The Birds of Britain, Their Distribution and Habits
GB107808A (en) Improvements in or relating to Buffer and other Springs Constructed with India-rubber.
CA126525A (en) Injector
GB191118669A (en) A New or Improved Linking Device or the like.
CA160141A (en) Signalling by electro-magnetic waves
GB191301862A (en) An Improved "Earthing" Clip.
AU1402414B (en) An improved pulveriser for agricultural purposes
GB187368A (en) Improvements in or relating to gas meters
GB254844A (en) Improvements in wireless variable coil holders
Black Elementary theory of music; a reference book for children, by MR and MB Black.
GB191114367A (en) An Improved Cabinet for Office Use.
CA158200A (en) Damper
ES59414A1 (es) Un electroimán con inducto provisto de muelle antagónico ajustable.
CA138469A (en) Suspender
CA135094A (en) Belt fastener
DK16045C (da) Mikrofon med flere faste Elektroder.
CA167887A (en) Stamping mallet