FR608446A - Slide rule for radiotelegraph operator - Google Patents

Slide rule for radiotelegraph operator

Info

Publication number
FR608446A
FR608446A FR608446DA FR608446A FR 608446 A FR608446 A FR 608446A FR 608446D A FR608446D A FR 608446DA FR 608446 A FR608446 A FR 608446A
Authority
FR
France
Prior art keywords
radiotelegraph
operator
slide rule
rule
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
Emile-Marie-Francois Fromy
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 FR608446A publication Critical patent/FR608446A/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)
FR608446D 1925-12-29 1925-12-29 Slide rule for radiotelegraph operator Expired FR608446A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR608446T 1925-12-29

Publications (1)

Publication Number Publication Date
FR608446A true FR608446A (en) 1926-07-27

Family

ID=8976062

Family Applications (1)

Application Number Title Priority Date Filing Date
FR608446D Expired FR608446A (en) 1925-12-29 1925-12-29 Slide rule for radiotelegraph operator

Country Status (1)

Country Link
FR (1) FR608446A (en)

Similar Documents

Publication Publication Date Title
FR608446A (en) Slide rule for radiotelegraph operator
FR576370A (en) Multipurpose ruler
FR629569A (en) Knurled shears
FR618811A (en) Caliper-compass-gauge
FR602285A (en) Dividing machine table
FR601289A (en) Hand planer machine
FR601762A (en) Slide rule
FR582237A (en) Slide rule
FR565397A (en) Slide rule
FR605506A (en) Calculator
FR614306A (en) Slide for extendable table
FR608308A (en) Shearing machine
FR606407A (en) Ruler binder for scales
FR645860A (en) Slide rule
FR596424A (en) Hand counter
FR630320A (en) Hand-held rudder-thruster for boats
FR538880A (en) Slide rule
FR642372A (en) Inexpensive slide rule
FR609275A (en) Hand shears
FR605628A (en) Hand shears
FR581585A (en) Circular slide rule
FR600343A (en) Projection device for divided materials
FR595241A (en) cheese rack
FR610416A (en) Calculator
FR593433A (en) Grating machine