BR7303144D0 - Aperfeicoamentos em teclado para maquinas de calcular de contabilidade e outras maquinas de escritorio - Google Patents

Aperfeicoamentos em teclado para maquinas de calcular de contabilidade e outras maquinas de escritorio

Info

Publication number
BR7303144D0
BR7303144D0 BR3144/73A BR314473A BR7303144D0 BR 7303144 D0 BR7303144 D0 BR 7303144D0 BR 3144/73 A BR3144/73 A BR 3144/73A BR 314473 A BR314473 A BR 314473A BR 7303144 D0 BR7303144 D0 BR 7303144D0
Authority
BR
Brazil
Prior art keywords
machines
office
accounting calculation
keyboard
keyboard improvements
Prior art date
Application number
BR3144/73A
Other languages
English (en)
Inventor
N Giolitti
L Daly
Original Assignee
Olivetti & Co Spa
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 Olivetti & Co Spa filed Critical Olivetti & Co Spa
Publication of BR7303144D0 publication Critical patent/BR7303144D0/pt

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/72—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06C—DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY
    • G06C7/00—Input mechanisms
    • G06C7/02—Keyboards

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Input From Keyboards Or The Like (AREA)
  • Push-Button Switches (AREA)
BR3144/73A 1972-04-28 1973-04-30 Aperfeicoamentos em teclado para maquinas de calcular de contabilidade e outras maquinas de escritorio BR7303144D0 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT68316/72A IT954791B (it) 1972-04-28 1972-04-28 Tastiera per macchine calcolatrici contabili e simili macchine per ufficio

Publications (1)

Publication Number Publication Date
BR7303144D0 true BR7303144D0 (pt) 1974-07-11

Family

ID=11308954

Family Applications (1)

Application Number Title Priority Date Filing Date
BR3144/73A BR7303144D0 (pt) 1972-04-28 1973-04-30 Aperfeicoamentos em teclado para maquinas de calcular de contabilidade e outras maquinas de escritorio

Country Status (10)

Country Link
US (1) US3872468A (pt)
JP (1) JPS4955227A (pt)
AR (1) AR198085A1 (pt)
BR (1) BR7303144D0 (pt)
CA (1) CA981645A (pt)
DE (1) DE2322376C2 (pt)
ES (1) ES414192A1 (pt)
FR (1) FR2182549A5 (pt)
GB (1) GB1422020A (pt)
IT (1) IT954791B (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4016967A (en) * 1975-11-18 1977-04-12 Hamilton Communications, Inc. Decoding means with error inhibitor for use with a typewriter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3456077A (en) * 1965-09-22 1969-07-15 Navigation Computer Corp High speed electronic keyboard assembly
US3491337A (en) * 1966-12-05 1970-01-20 Scm Corp Coded message generator
US3466647A (en) * 1967-07-31 1969-09-09 Scm Corp Data signal generating apparatus
US3530239A (en) * 1968-01-17 1970-09-22 Jara Electronics Inc Information encoding and recording system
JPS5023944U (pt) * 1973-06-23 1975-03-18

Also Published As

Publication number Publication date
AR198085A1 (es) 1974-05-31
CA981645A (en) 1976-01-13
IT954791B (it) 1973-09-15
US3872468A (en) 1975-03-18
FR2182549A5 (pt) 1973-12-07
DE2322376C2 (de) 1983-04-28
ES414192A1 (es) 1976-03-01
DE2322376A1 (de) 1973-11-15
GB1422020A (en) 1976-01-21
JPS4955227A (pt) 1974-05-29

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