Patent US3411422A successfully refreshed from Google Patents.
US3411422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mirror reflex camera with central shutter
Assignee: Zeiss Ikon AG
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Filing: 1966-08-24
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Granted: 1968-11-19
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Expires: 1986-08-24
Abstract
No abstract record available.
Inventors
- 👤 Sauer Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:53
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/28; G03B17/30; G03B19/00; G03B19/02; G03B19/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A MIRROR REFLEX CAMERA PROVIDED WITH A CENTRAL SHUTTER AND A FILM ADVANCING MEANS, THE COMBINATION WITH A FILM CARTRIDGE PROVIDED AT ITS ENDS WITH FILM SPOOL CHAMBERS CONNECTED WITH EACH OTHER BY A BRIDGE PROVIDED WITH A PICTURE WINDOW, SAID FILM SPOOL CHAMBERS PROJECTING LATERALLY FROM SAID BRIDGE AND EXTEND FORWARDLY INTO THE CAMERA WHEN THE FILM CARTRIDGE IS INSERTED FROM THE REAR INTO THE CAMERA, A LIGHT-PROTECTIVE CURTAIN IN FRONT OF THE WINDOW IN SAID CARTRIDGE, MEANS FOR MOVING SAID CURTAIN
Claim 2
Dependent Claim
84 words
IN A MIRROR REFLEX CAMERA PROVIDED WITH A CENTRAL SHUTTER AND A FILM ADVANCING MEANS, THE COMBINATION WITH A FILM CARTRIDGE PROVIDED AT ITS ENDS WITH FILM SPOOL CHAMBERS CONNECTED WITH EACH OTHER BY A BRIDGE PROVIDED WITH A PICTURE WINDOW, SAID FILM SPOOL CHAMBERS PROJECTING LATERALLY FROM SAID BRIDGE AND EXTEND FORWARDLY INTO THE CAMERA WHEN THE FILM CARTRIDGE IS INSERTED FROM THE REAR INTO THE CAMERA, A LIGHT-PROTECTIVE CURTAIN IN FRONT OF THE WINDOW IN SAID CARTRIDGE, MEANS FOR MOVING SAID CURTAIN
References Cited (Backward Citations)
US3101657A
Cited
US3083627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |