GB191315179A - Improvements in Telephone Relays. - Google Patents

Improvements in Telephone Relays.

Info

Publication number
GB191315179A
GB191315179A GB191315179DA GB191315179A GB 191315179 A GB191315179 A GB 191315179A GB 191315179D A GB191315179D A GB 191315179DA GB 191315179 A GB191315179 A GB 191315179A
Authority
GB
United Kingdom
Prior art keywords
resistance
box
walls
iron
disk
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
Other languages
English (en)
Inventor
Josef Schiessler
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191315179A publication Critical patent/GB191315179A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB191315179D 1912-07-15 1913-07-01 Improvements in Telephone Relays. Expired GB191315179A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT191315179X 1912-07-15

Publications (1)

Publication Number Publication Date
GB191315179A true GB191315179A (en) 1914-02-12

Family

ID=32601447

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191315179D Expired GB191315179A (en) 1912-07-15 1913-07-01 Improvements in Telephone Relays.

Country Status (3)

Country Link
DE (1) DE278950C (enrdf_load_stackoverflow)
FR (1) FR463735A (enrdf_load_stackoverflow)
GB (1) GB191315179A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE278950C (enrdf_load_stackoverflow)
FR463735A (fr) 1914-03-03

Similar Documents

Publication Publication Date Title
GB191315179A (en) Improvements in Telephone Relays.
Brown A telephone relay
US1164407A (en) Telephone-relay.
US1743194A (en) Radio loud-speaker
US771917A (en) Wave-transmitter.
US986707A (en) Electric-circuit controller and alarm.
US1206352A (en) Apparatus for wireless transmission of energy.
US991304A (en) Means for reproducing electrical variations.
US1911309A (en) Electric organ operating by means of electrode valves
Miller American telephone practice
McMeen et al. Telephony: a comprehensive and detailed exposition of the theory and practice of the telephone art
US513720A (en) Telephone
US212144A (en) Improvement in acoustic telegraphs
US1606776A (en) Telephone speaker
Homans ABC of the Telephone: A Practical and Useful Treatise for Students and Workers in Telephony, Giving a Review of the Development of the Industry to the Present Date, and Full Descriptions of Numerous Valuable Inventions and Appliances
US1203326A (en) Telephone relay or repeater.
US1711551A (en) Reproducing and recording of sound
US607801A (en) de kilduchevcky
US1183404A (en) Method and apparatus for reproducing sounds.
US1110548A (en) Starting and controlling device for electric vapor apparatus.
US324726A (en) Telephone transmitter and relay
US476200A (en) Telephone
US857530A (en) Wireless telephone.
US517764A (en) Magneto-telephone
US881539A (en) Electric bell.