FR909919A - Improvement in slide rules - Google Patents

Improvement in slide rules

Info

Publication number
FR909919A
FR909919A FR909919DA FR909919A FR 909919 A FR909919 A FR 909919A FR 909919D A FR909919D A FR 909919DA FR 909919 A FR909919 A FR 909919A
Authority
FR
France
Prior art keywords
improvement
slide rules
rules
slide
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
Raymond-Lucien Dudin
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 filed Critical
Application granted granted Critical
Publication of FR909919A publication Critical patent/FR909919A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G1/00—Hand manipulated computing devices
    • G06G1/02—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales
    • G06G1/10—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation
    • G06G1/12—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by the graduation logarithmic graduations, e.g. for multiplication

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
FR909919D 1945-03-22 1945-03-22 Improvement in slide rules Expired FR909919A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR909919T 1945-03-22

Publications (1)

Publication Number Publication Date
FR909919A true FR909919A (en) 1946-05-22

Family

ID=9408360

Family Applications (1)

Application Number Title Priority Date Filing Date
FR909919D Expired FR909919A (en) 1945-03-22 1945-03-22 Improvement in slide rules

Country Status (1)

Country Link
FR (1) FR909919A (en)

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