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FR53447E - Perfectionnements aux règles à calcul - Google Patents

Perfectionnements aux règles à calcul

Info

Publication number
FR53447E
FR53447E FR53447DA FR53447E FR 53447 E FR53447 E FR 53447E FR 53447D A FR53447D A FR 53447DA FR 53447 E FR53447 E FR 53447E
Authority
FR
France
Prior art keywords
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
English (en)
Inventor
Andre-Robert Barthomier
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 FR53447E publication Critical patent/FR53447E/fr
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)
FR53447D 1944-02-11 1944-02-11 Perfectionnements aux règles à calcul Expired FR53447E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR53447T 1944-02-11

Publications (1)

Publication Number Publication Date
FR53447E true FR53447E (fr) 1946-01-10

Family

ID=8687997

Family Applications (1)

Application Number Title Priority Date Filing Date
FR53447D Expired FR53447E (fr) 1944-02-11 1944-02-11 Perfectionnements aux règles à calcul

Country Status (1)

Country Link
FR (1) FR53447E (fr)

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