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FR529197A - Device for recording curves in polar coordinates - Google Patents

Device for recording curves in polar coordinates

Info

Publication number
FR529197A
FR529197A FR529197A FR529197DA FR529197A FR 529197 A FR529197 A FR 529197A FR 529197 A FR529197 A FR 529197A FR 529197D A FR529197D A FR 529197DA FR 529197 A FR529197 A FR 529197A
Authority
FR
France
Prior art keywords
polar coordinates
recording curves
curves
recording
polar
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
FR529197A
Other languages
French (fr)
Inventor
Francois Gueugnon
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 FR529197A publication Critical patent/FR529197A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L13/00—Drawing instruments, or writing or drawing appliances or accessories not otherwise provided for
    • B43L13/001—Mathematical drawing instruments
FR529197A 1920-07-19 1920-07-19 Device for recording curves in polar coordinates Expired FR529197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR529197T 1920-07-19

Publications (1)

Publication Number Publication Date
FR529197A true FR529197A (en) 1921-11-24

Family

ID=8922566

Family Applications (1)

Application Number Title Priority Date Filing Date
FR529197A Expired FR529197A (en) 1920-07-19 1920-07-19 Device for recording curves in polar coordinates

Country Status (1)

Country Link
FR (1) FR529197A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131937A (en) * 1958-04-01 1964-05-05 Nakamatsu Yoshiro Magnetic record sheet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131937A (en) * 1958-04-01 1964-05-05 Nakamatsu Yoshiro Magnetic record sheet

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