FR867531A - Improvements to calculating machines - Google Patents

Improvements to calculating machines

Info

Publication number
FR867531A
FR867531A FR867531DA FR867531A FR 867531 A FR867531 A FR 867531A FR 867531D A FR867531D A FR 867531DA FR 867531 A FR867531 A FR 867531A
Authority
FR
France
Prior art keywords
calculating machines
machines
calculating
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
French (fr)
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.)
Bell Punch Co Ltd
Original Assignee
Bell Punch 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 Bell Punch Co Ltd filed Critical Bell Punch Co Ltd
Application granted granted Critical
Publication of FR867531A publication Critical patent/FR867531A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G06C7/06—Keyboards with one set of keys for each denomination

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR867531D 1938-12-19 1939-12-28 Improvements to calculating machines Expired FR867531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB867531X 1938-12-19

Publications (1)

Publication Number Publication Date
FR867531A true FR867531A (en) 1941-11-10

Family

ID=10610109

Family Applications (1)

Application Number Title Priority Date Filing Date
FR867531D Expired FR867531A (en) 1938-12-19 1939-12-28 Improvements to calculating machines

Country Status (1)

Country Link
FR (1) FR867531A (en)

Similar Documents

Publication Publication Date Title
FR845884A (en) Improvements to calculating machines
FR857586A (en) Improvements to typewriters
FR866703A (en) Improvements to calculating machines
FR837012A (en) Improvements to calculating machines
FR860790A (en) Improvements to shelling machines
FR861862A (en) Improvements to encryption machines
FR838826A (en) Improvements to cutting wheels
FR839785A (en) Improvements to calculating machines
FR867531A (en) Improvements to calculating machines
FR851750A (en) Improvements to calculating machines
FR854457A (en) Improvements to calculating machines
FR843659A (en) Improvements to circular looms
FR875817A (en) Improvements to stenotyping machines
FR858609A (en) Improvements to packaging machines
FR861117A (en) Improvements to knitting machines
FR872515A (en) Improvements to calculating machines
FR872511A (en) Improvements to calculating machines
FR872512A (en) Improvements to calculating machines
FR872514A (en) Improvements to calculating machines
FR908352A (en) Improvements to calculating machines
FR872516A (en) Improvements to calculating machines
FR49082E (en) Improvements to looms
FR857128A (en) Improvements to multiplying machines
FR860827A (en) Improvements to statistical machines
FR854192A (en) Improvements to refrigeration machines