FR339441A - Improvements to adding machines - Google Patents

Improvements to adding machines

Info

Publication number
FR339441A
FR339441A FR339441DA FR339441A FR 339441 A FR339441 A FR 339441A FR 339441D A FR339441D A FR 339441DA FR 339441 A FR339441 A FR 339441A
Authority
FR
France
Prior art keywords
adding machines
machines
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)
Inventor
Arthur James Postans
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 FR339441A publication Critical patent/FR339441A/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
    • G06C7/08—Keyboards with one set of keys for all denominations, e.g. ten-key board

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
FR339441D 1904-01-08 1904-01-08 Improvements to adding machines Expired FR339441A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR339441T 1904-01-08

Publications (1)

Publication Number Publication Date
FR339441A true FR339441A (en) 1904-06-09

Family

ID=1388616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR339441D Expired FR339441A (en) 1904-01-08 1904-01-08 Improvements to adding machines

Country Status (1)

Country Link
FR (1) FR339441A (en)

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