CA945530A - Self-interlocking keyboards - Google Patents

Self-interlocking keyboards

Info

Publication number
CA945530A
CA945530A CA130,138A CA130138A CA945530A CA 945530 A CA945530 A CA 945530A CA 130138 A CA130138 A CA 130138A CA 945530 A CA945530 A CA 945530A
Authority
CA
Canada
Prior art keywords
keyboards
interlocking
self
interlocking keyboards
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
CA130,138A
Other languages
English (en)
Other versions
CA130138S (en
Inventor
Peter H. Degraff
James W. Lee
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.)
National Cash Register Co
Original Assignee
National Cash Register Co
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 National Cash Register Co filed Critical National Cash Register Co
Application granted granted Critical
Publication of CA945530A publication Critical patent/CA945530A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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)
CA130,138A 1971-02-08 1971-12-14 Self-interlocking keyboards Expired CA945530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11343071A 1971-02-08 1971-02-08

Publications (1)

Publication Number Publication Date
CA945530A true CA945530A (en) 1974-04-16

Family

ID=22349363

Family Applications (1)

Application Number Title Priority Date Filing Date
CA130,138A Expired CA945530A (en) 1971-02-08 1971-12-14 Self-interlocking keyboards

Country Status (11)

Country Link
US (1) US3750796A (https=)
JP (1) JPS5228396B1 (https=)
AU (1) AU449697B2 (https=)
BE (1) BE779028A (https=)
CA (1) CA945530A (https=)
CH (1) CH529380A (https=)
DE (1) DE2205056A1 (https=)
FR (1) FR2126732A5 (https=)
GB (1) GB1350733A (https=)
IT (1) IT947362B (https=)
ZA (1) ZA72294B (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020039411A2 (en) 2019-09-28 2020-02-27 Famatek Gmbh Capsule comprising a main and a supplemental precursor ingredient, method for production of said capsule and method for preparing a beverage

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US26954A (en) * 1860-01-24 James w
GB448846A (en) * 1934-11-12 1936-06-12 Ronald George Griffith Improvements in or relating to telegraph keyboard-controlled code-translating apparatus
US2383260A (en) * 1943-07-03 1945-08-21 Royal Typewriter Co Inc Typewriting machine
US2720961A (en) * 1954-03-31 1955-10-18 Ibm Key latching and release mechanism
US2835369A (en) * 1956-11-02 1958-05-20 Underwood Corp Key interlock
US3128563A (en) * 1962-04-06 1964-04-14 Mc Graw Edison Co Decode-encode system for teaching machines
US3189153A (en) * 1962-07-03 1965-06-15 Ibm Keyboard
CH420219A (fr) * 1964-05-04 1966-09-15 Olivetti & Co Spa Clavier de code pour machines à écrire, télescripteurs, machines comptables et machines de bureau similaires
DE1227541B (de) * 1964-06-24 1966-10-27 Olympia Werke Ag Tastenbetaetigte Schaltanordnung mit elektrischer Schaltzeitsteuerung
US3493092A (en) * 1966-07-22 1970-02-03 Intercontinental Systems Inc Tabulation index control means for printer
US3610389A (en) * 1967-09-16 1971-10-05 Olivetti & Co Spa Keyboard machine with sequentially responsive printing means
US3592313A (en) * 1968-07-15 1971-07-13 Ibm Encoding keyboard having dual-output shift key
US3495236A (en) * 1969-04-16 1970-02-10 Burroughs Corp Transducer

Also Published As

Publication number Publication date
US3750796A (en) 1973-08-07
JPS5228396B1 (https=) 1977-07-26
ZA72294B (en) 1972-09-27
AU3804472A (en) 1973-07-26
CH529380A (de) 1972-10-15
DE2205056A1 (de) 1972-08-24
BE779028A (fr) 1972-05-30
GB1350733A (en) 1974-04-24
AU449697B2 (en) 1974-06-20
FR2126732A5 (https=) 1972-10-06
IT947362B (it) 1973-05-21

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