FR655935A - Perfectionnements aux chambres claires - Google Patents

Perfectionnements aux chambres claires

Info

Publication number
FR655935A
FR655935A FR655935DA FR655935A FR 655935 A FR655935 A FR 655935A FR 655935D A FR655935D A FR 655935DA FR 655935 A FR655935 A FR 655935A
Authority
FR
France
Prior art keywords
bright rooms
rooms
bright
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
English (en)
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.)
EARRAGH DE LANCEY
Original Assignee
EARRAGH DE LANCEY
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 EARRAGH DE LANCEY filed Critical EARRAGH DE LANCEY
Application granted granted Critical
Publication of FR655935A publication Critical patent/FR655935A/fr
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
    • B43L13/14—Devices for drawing in perspective
    • B43L13/16—Devices for drawing in perspective free-hand
    • B43L13/18—Devices for drawing in perspective free-hand having optical or projecting equipment
FR655935D 1928-06-14 1928-06-14 Perfectionnements aux chambres claires Expired FR655935A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR655935T 1928-06-14

Publications (1)

Publication Number Publication Date
FR655935A true FR655935A (fr) 1929-04-25

Family

ID=9007437

Family Applications (1)

Application Number Title Priority Date Filing Date
FR655935D Expired FR655935A (fr) 1928-06-14 1928-06-14 Perfectionnements aux chambres claires

Country Status (1)

Country Link
FR (1) FR655935A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704960A (en) * 1953-08-10 1955-03-29 Jr Edward I Loud Stereoscopic plotting instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2704960A (en) * 1953-08-10 1955-03-29 Jr Edward I Loud Stereoscopic plotting instrument

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