FR403912A - Improvements to calculating machines - Google Patents

Improvements to calculating machines

Info

Publication number
FR403912A
FR403912A FR403912DA FR403912A FR 403912 A FR403912 A FR 403912A FR 403912D A FR403912D A FR 403912DA FR 403912 A FR403912 A FR 403912A
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)
Inventor
Dorr Eugene Felt
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 FR403912A publication Critical patent/FR403912A/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)
FR403912D 1908-09-16 1909-06-01 Improvements to calculating machines Expired FR403912A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US403912XA 1908-09-16 1908-09-16

Publications (1)

Publication Number Publication Date
FR403912A true FR403912A (en) 1909-11-18

Family

ID=1448519

Family Applications (1)

Application Number Title Priority Date Filing Date
FR403912D Expired FR403912A (en) 1908-09-16 1909-06-01 Improvements to calculating machines

Country Status (1)

Country Link
FR (1) FR403912A (en)

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