FR764986A - Perfectionnements aux chambres claires - Google Patents

Perfectionnements aux chambres claires

Info

Publication number
FR764986A
FR764986A FR764986DA FR764986A FR 764986 A FR764986 A FR 764986A FR 764986D A FR764986D A FR 764986DA FR 764986 A FR764986 A FR 764986A
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.)
BERVILLE P
Original Assignee
BERVILLE P
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 BERVILLE P filed Critical BERVILLE P
Application granted granted Critical
Publication of FR764986A publication Critical patent/FR764986A/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
FR764986D 1933-12-04 1933-12-04 Perfectionnements aux chambres claires Expired FR764986A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR764986T 1933-12-04

Publications (1)

Publication Number Publication Date
FR764986A true FR764986A (fr) 1934-05-31

Family

ID=9182480

Family Applications (1)

Application Number Title Priority Date Filing Date
FR764986D Expired FR764986A (fr) 1933-12-04 1933-12-04 Perfectionnements aux chambres claires

Country Status (1)

Country Link
FR (1) FR764986A (fr)

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