FR619250A - Device for detecting very small sudden variations in a phenomenon - Google Patents

Device for detecting very small sudden variations in a phenomenon

Info

Publication number
FR619250A
FR619250A FR619250DA FR619250A FR 619250 A FR619250 A FR 619250A FR 619250D A FR619250D A FR 619250DA FR 619250 A FR619250 A FR 619250A
Authority
FR
France
Prior art keywords
phenomenon
detecting
sudden variations
small sudden
small
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
Pierre Hamy
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 FR619250A publication Critical patent/FR619250A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
    • G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR619250D 1925-11-27 1925-11-27 Device for detecting very small sudden variations in a phenomenon Expired FR619250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR619250T 1925-11-27

Publications (1)

Publication Number Publication Date
FR619250A true FR619250A (en) 1927-03-29

Family

ID=8983537

Family Applications (1)

Application Number Title Priority Date Filing Date
FR619250D Expired FR619250A (en) 1925-11-27 1925-11-27 Device for detecting very small sudden variations in a phenomenon

Country Status (1)

Country Link
FR (1) FR619250A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483408A (en) * 1945-03-26 1949-10-04 Standard Telephones Cables Ltd Relay circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483408A (en) * 1945-03-26 1949-10-04 Standard Telephones Cables Ltd Relay circuit

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