FR420221A - Improvements in speed indicators and recorders - Google Patents

Improvements in speed indicators and recorders

Info

Publication number
FR420221A
FR420221A FR420221DA FR420221A FR 420221 A FR420221 A FR 420221A FR 420221D A FR420221D A FR 420221DA FR 420221 A FR420221 A FR 420221A
Authority
FR
France
Prior art keywords
recorders
speed indicators
indicators
speed
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
Alva D Renfro
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.)
ALVA D RENFRO
Original Assignee
ALVA D RENFRO
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 ALVA D RENFRO filed Critical ALVA D RENFRO
Application granted granted Critical
Publication of FR420221A publication Critical patent/FR420221A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/12—Recording devices
    • G01P1/122—Speed recorders

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR420221D 1910-07-30 1910-07-30 Improvements in speed indicators and recorders Expired FR420221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR420221T 1910-07-30

Publications (1)

Publication Number Publication Date
FR420221A true FR420221A (en) 1911-01-25

Family

ID=1463383

Family Applications (1)

Application Number Title Priority Date Filing Date
FR420221D Expired FR420221A (en) 1910-07-30 1910-07-30 Improvements in speed indicators and recorders

Country Status (1)

Country Link
FR (1) FR420221A (en)

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