Patent US3212422A successfully refreshed from Google Patents.
US3212422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viewfinder for zoom lens cameras
Assignee: Eastman Kodak Co
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Filing: 1963-02-20
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Granted: 1965-10-19
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Nerwin Hubert
- 👤 John H Eagle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:57
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A VARIABLE VIEWFINDER FOR A CAMERA HAVING A LENS ARRANGEMENT ADJUSTABLE THROUGHOUT SUBSTANTIALLY DIFFERENT ANGLES OF VIEW, COMPRISING: A RECTANGULAR FRAMING MASK MEANS HAVING FOUR LATERALLY MOVABLE OPTICALLY DENSE OUTLINING MEANS RESILIENTLY BIASED TO REDUCE AN OPERTURE DEFINED THEREBY TO A MINIMUM FRAMING SIZE AND POSITIONABLE WITH RESPECT TO AN EYEPIECE TO ALLOW VIEWING OF AT LEAST A PORTION OF A SUBJECT; A LENS SYSTEM COUPLED TO SAID FRAMING MASK MEANS TO HAVE A FIELD OF VIEW SIMILAR TO THAT DEFINED BY SAID FRAMING MASK MEANS; A MOVABLE ELEMENT IN SAID LENS SYSTEM THAT PROGRESSES CONTINUOUSLY IN ONE DIRECTION AS FOCUSING IN THE DIRECTION OF THE SUBJECT IS ACCOMPLISHED FROM NARROWANGLE TO WIDE-ANGLE; AND
Claim 2
Dependent Claim
114 words
A VARIABLE VIEWFINDER FOR A CAMERA HAVING A LENS ARRANGEMENT ADJUSTABLE THROUGHOUT SUBSTANTIALLY DIFFERENT ANGLES OF VIEW, COMPRISING: A RECTANGULAR FRAMING MASK MEANS HAVING FOUR LATERALLY MOVABLE OPTICALLY DENSE OUTLINING MEANS RESILIENTLY BIASED TO REDUCE AN OPERTURE DEFINED THEREBY TO A MINIMUM FRAMING SIZE AND POSITIONABLE WITH RESPECT TO AN EYEPIECE TO ALLOW VIEWING OF AT LEAST A PORTION OF A SUBJECT; A LENS SYSTEM COUPLED TO SAID FRAMING MASK MEANS TO HAVE A FIELD OF VIEW SIMILAR TO THAT DEFINED BY SAID FRAMING MASK MEANS; A MOVABLE ELEMENT IN SAID LENS SYSTEM THAT PROGRESSES CONTINUOUSLY IN ONE DIRECTION AS FOCUSING IN THE DIRECTION OF THE SUBJECT IS ACCOMPLISHED FROM NARROWANGLE TO WIDE-ANGLE; AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |