FR490539A - Frequency meter - Google Patents

Frequency meter

Info

Publication number
FR490539A
FR490539A FR490539DA FR490539A FR 490539 A FR490539 A FR 490539A FR 490539D A FR490539D A FR 490539DA FR 490539 A FR490539 A FR 490539A
Authority
FR
France
Prior art keywords
frequency meter
meter
frequency
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)
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.)
Weston Electric Instrument Corp
Original Assignee
Weston Electric Instrument Corp
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 Weston Electric Instrument Corp filed Critical Weston Electric Instrument Corp
Application granted granted Critical
Publication of FR490539A publication Critical patent/FR490539A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR490539D 1918-06-15 1918-06-15 Frequency meter Expired FR490539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR490539T 1918-06-15

Publications (1)

Publication Number Publication Date
FR490539A true FR490539A (en) 1919-04-26

Family

ID=1526650

Family Applications (1)

Application Number Title Priority Date Filing Date
FR490539D Expired FR490539A (en) 1918-06-15 1918-06-15 Frequency meter

Country Status (1)

Country Link
FR (1) FR490539A (en)

Similar Documents

Publication Publication Date Title
FR490539A (en) Frequency meter
FI7019A (en) Frequency measures
FR20519E (en) Suitcase-table-stools
CH79196A (en) Dial
CH80046A (en) plane
CH81230A (en) plane
CH79591A (en) plane
FR532350A (en) Metronome
FR491419A (en) Canteen-bed
FR21124E (en) Hourdis
FR24160E (en) Switch-switch
FR489325A (en) Smoke-eating
FR489326A (en) Smoke-eating
FR489606A (en) Stove-heater
FR490019A (en) Ellipsograph
FR491203A (en) Stiffener-catchy
CH79607A (en) Calorifier
FI7145A (en) Skosöm
FI6917A (en) Säkerhetslås
FI6919A (en) Stänkskärm
FI7082A (en) Hårnål
CH81823A (en) Self-oiler
CH80841A (en) Jaßservice
CH79934A (en) Self-cooker
CH79618A (en) Self-cooker