CA478061A - Systemes d'optique pour appareils a microfilms - Google Patents

Systemes d'optique pour appareils a microfilms

Info

Publication number: CA478061A
Authority: CA; Canada
Prior art keywords: optical systems; microfilm apparatus; microfilm; optical; systems
Prior art date: 1951-10-30
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

CA478061A

Other languages

English (en)

Inventor

E. Pratt Verneur

F. Gray George

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

Publication date

1951-10-30

1951-10-30 Application granted granted Critical

1951-10-30 Publication of CA478061A publication Critical patent/CA478061A/fr

Status Expired legal-status Critical Current

Links

230000003287 optical effect Effects 0.000 title 1

CA478061A Systemes d'optique pour appareils a microfilms Expired CA478061A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CA478061T

Publications (1)

Publication Number	Publication Date
CA478061A true CA478061A (fr)	1951-10-30

Family

ID=35617714

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA478061A Expired CA478061A (fr)			Systemes d'optique pour appareils a microfilms

Country Status (1)

Country	Link
CA (1)	CA478061A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4029411A (en) *	1975-10-30	1977-06-14	Xerox Corporation	Variable magnification copier

0
- CA CA478061A patent/CA478061A/fr not_active Expired

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4029411A (en) *	1975-10-30	1977-06-14	Xerox Corporation	Variable magnification copier

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