CA437507A - Ecran-filtre en matiere plastique - Google Patents

Ecran-filtre en matiere plastique

Info

Publication number: CA437507A
Authority: CA; Canada
Prior art keywords: light; plastic material; filtering plastic; filtering; plastic
Prior art date: 1946-10-22
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

CA437507A

Other languages

English (en)

Inventor

Herbert Land Edwin

Thomas Alexander

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.)

Polaroid Corp

Original Assignee

Polaroid Corp

Publication date

1946-10-22

1946-10-22 Application granted granted Critical

1946-10-22 Publication of CA437507A publication Critical patent/CA437507A/fr

Status Expired legal-status Critical Current

Links

238000001914 filtration Methods 0.000 title 1

CA437507A Ecran-filtre en matiere plastique Expired CA437507A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA437507T

Publications (1)

Publication Number	Publication Date
CA437507A true CA437507A (fr)	1946-10-22

Family

ID=35552742

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA437507A Expired CA437507A (fr)			Ecran-filtre en matiere plastique

Country Status (1)

Country	Link
CA (1)	CA437507A (fr)

0
- CA CA437507A patent/CA437507A/fr not_active Expired

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