FR406998A - Machine à additions et à soustractions - Google Patents

Machine à additions et à soustractions

Info

Publication number
FR406998A
FR406998A FR406998DA FR406998A FR 406998 A FR406998 A FR 406998A FR 406998D A FR406998D A FR 406998DA FR 406998 A FR406998 A FR 406998A
Authority
FR
France
Prior art keywords
addition
subtraction machine
subtraction
machine
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)
Inventor
Wilhelm Strauss
Theodor Geertz
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.)
THEODOR GEERTZ
Original Assignee
THEODOR GEERTZ
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 THEODOR GEERTZ filed Critical THEODOR GEERTZ
Application granted granted Critical
Publication of FR406998A publication Critical patent/FR406998A/fr
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)
FR406998D 1909-09-14 1909-09-14 Machine à additions et à soustractions Expired FR406998A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR406998T 1909-09-14

Publications (1)

Publication Number Publication Date
FR406998A true FR406998A (fr) 1910-02-16

Family

ID=1451339

Family Applications (1)

Application Number Title Priority Date Filing Date
FR406998D Expired FR406998A (fr) 1909-09-14 1909-09-14 Machine à additions et à soustractions

Country Status (1)

Country Link
FR (1) FR406998A (fr)

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