FR485215A - Perfectionnements aux règles à calcul - Google Patents

Perfectionnements aux règles à calcul

Info

Publication number
FR485215A
FR485215A FR485215DA FR485215A FR 485215 A FR485215 A FR 485215A FR 485215D A FR485215D A FR 485215DA FR 485215 A FR485215 A FR 485215A
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
Jiro Hemmi
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 FR485215A publication Critical patent/FR485215A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06G1/04—Devices in which computing is effected by adding, subtracting, or comparing lengths of parallel or concentric graduated scales characterised by construction

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
FR485215D 1917-02-12 1917-04-25 Perfectionnements aux règles à calcul Expired FR485215A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP485215X 1917-02-12

Publications (1)

Publication Number Publication Date
FR485215A true FR485215A (fr) 1917-12-20

Family

ID=1521942

Family Applications (1)

Application Number Title Priority Date Filing Date
FR485215D Expired FR485215A (fr) 1917-02-12 1917-04-25 Perfectionnements aux règles à calcul

Country Status (1)

Country Link
FR (1) FR485215A (fr)

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