GB1330742A - Keyboard encoding arrangement for a telegraphic machine - Google Patents

Keyboard encoding arrangement for a telegraphic machine

Info

Publication number
GB1330742A
GB1330742A GB1330742DA GB1330742A GB 1330742 A GB1330742 A GB 1330742A GB 1330742D A GB1330742D A GB 1330742DA GB 1330742 A GB1330742 A GB 1330742A
Authority
GB
United Kingdom
Prior art keywords
transducers
keyboard
telegraphic
piezo
electrically insulating
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)
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.)
Creed and Co Ltd
Original Assignee
Creed and Co Ltd
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 Creed and Co Ltd filed Critical Creed and Co Ltd
Publication of GB1330742A publication Critical patent/GB1330742A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L13/00—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00
    • H04L13/16—Details of the apparatus or circuits covered by groups H04L15/00 or H04L17/00 of transmitters, e.g. code-bars, code-discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Push-Button Switches (AREA)
  • Impact Printers (AREA)
  • Input From Keyboards Or The Like (AREA)
GB1330742D 1971-08-05 1971-08-05 Keyboard encoding arrangement for a telegraphic machine Expired GB1330742A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3683571 1971-08-05

Publications (1)

Publication Number Publication Date
GB1330742A true GB1330742A (en) 1973-09-19

Family

ID=10391560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1330742D Expired GB1330742A (en) 1971-08-05 1971-08-05 Keyboard encoding arrangement for a telegraphic machine

Country Status (5)

Country Link
AU (1) AU4513572A (enExample)
DE (1) DE2238027A1 (enExample)
ES (1) ES405571A1 (enExample)
FR (1) FR2151270A5 (enExample)
GB (1) GB1330742A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258356A (en) 1978-04-03 1981-03-24 Scm Corporation Multi bar encoding apparatus utilizing acoustic energy
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
US6400285B1 (en) * 1992-10-08 2002-06-04 Henry Gifford Ergonomic keyboard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4258356A (en) 1978-04-03 1981-03-24 Scm Corporation Multi bar encoding apparatus utilizing acoustic energy
USRE32419E (en) * 1981-03-16 1987-05-12 Engineering Research Applications, Inc. Molded keyboard and method of fabricating same
US6400285B1 (en) * 1992-10-08 2002-06-04 Henry Gifford Ergonomic keyboard

Also Published As

Publication number Publication date
DE2238027A1 (de) 1973-02-15
AU4513572A (en) 1974-02-07
FR2151270A5 (enExample) 1973-04-13
ES405571A1 (es) 1975-08-01

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees