CH430426A - Writable drawing material - Google Patents

Writable drawing material

Info

Publication number
CH430426A
CH430426A CH282366A CH282366A CH430426A CH 430426 A CH430426 A CH 430426A CH 282366 A CH282366 A CH 282366A CH 282366 A CH282366 A CH 282366A CH 430426 A CH430426 A CH 430426A
Authority
CH
Switzerland
Prior art keywords
writable
drawing material
writable drawing
Prior art date
Application number
CH282366A
Other languages
German (de)
Inventor
H Stein Charles
Original Assignee
Keuffel & Esser Co
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 Keuffel & Esser Co filed Critical Keuffel & Esser Co
Publication of CH430426A publication Critical patent/CH430426A/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/68—Preparation processes not covered by groups G03F1/20 - G03F1/50
    • 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
    • B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
    • B43L1/04—Blackboards
    • B43L1/10—Writing surfaces thereof

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
CH282366A 1965-03-01 1966-02-28 Writable drawing material CH430426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43609165A 1965-03-01 1965-03-01

Publications (1)

Publication Number Publication Date
CH430426A true CH430426A (en) 1967-02-15

Family

ID=23731075

Family Applications (1)

Application Number Title Priority Date Filing Date
CH282366A CH430426A (en) 1965-03-01 1966-02-28 Writable drawing material

Country Status (5)

Country Link
BE (1) BE677216A (en)
CH (1) CH430426A (en)
DE (1) DE1511286A1 (en)
GB (1) GB1146289A (en)
NL (1) NL6602641A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319172A1 (en) * 1975-07-25 1977-02-18 Cellophane Sa Inscription transmission system using projector - uses transparent slide with opaque film which is written on by stylus
DE2721687C2 (en) * 1977-05-13 1986-11-20 Hoechst Ag, 6230 Frankfurt Process for covering master copies with masks
DE2845401C2 (en) * 1978-10-18 1980-10-02 Gao Gesellschaft Fuer Automation Und Organisation Mbh, 8000 Muenchen Printed security with authenticity features and procedures for checking its authenticity
CN114680349B (en) * 2020-12-31 2023-05-26 广东美的白色家电技术创新中心有限公司 Cleaning device

Also Published As

Publication number Publication date
DE1511286A1 (en) 1969-06-26
BE677216A (en) 1966-09-01
GB1146289A (en) 1969-03-26
NL6602641A (en) 1966-09-02

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