FR343658A - Case ruler for calculation - Google Patents

Case ruler for calculation

Info

Publication number
FR343658A
FR343658A FR343658DA FR343658A FR 343658 A FR343658 A FR 343658A FR 343658D A FR343658D A FR 343658DA FR 343658 A FR343658 A FR 343658A
Authority
FR
France
Prior art keywords
calculation
ruler
case
case ruler
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
Gustave Riche
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 FR343658A publication Critical patent/FR343658A/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
    • G06G1/04—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)
FR343658D 1904-06-02 1904-06-02 Case ruler for calculation Expired FR343658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR343658T 1904-06-02

Publications (1)

Publication Number Publication Date
FR343658A true FR343658A (en) 1904-10-12

Family

ID=1392586

Family Applications (1)

Application Number Title Priority Date Filing Date
FR343658D Expired FR343658A (en) 1904-06-02 1904-06-02 Case ruler for calculation

Country Status (1)

Country Link
FR (1) FR343658A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683946A (en) * 1952-05-31 1954-07-20 Brown & Bigelow Weather forecasting device
US3022002A (en) * 1959-02-17 1962-02-20 Lyle W Dixon Parallel rule-slide rule

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2683946A (en) * 1952-05-31 1954-07-20 Brown & Bigelow Weather forecasting device
US3022002A (en) * 1959-02-17 1962-02-20 Lyle W Dixon Parallel rule-slide rule

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