Patent US3339472A successfully refreshed from Google Patents.
US3339472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic cameras
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1965-02-23
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Granted: 1967-09-05
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 Leitz Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:54
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/60; G03B1/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
IN A PHOTOGRAPHIC CAMERA HAVING A LIGHT PROOF HOUSING, THERE BEING A CHAMBER IN THE HOUSING FOR RECEIVING A FILM CARTRIDGE, THE IMPROVEMENT COMPRISING: MEANS DEFINING A WINDOW IN SAID CAMERA HOUSING POSITIONED TO REGISTER WITH SAID INDICATING MEANS ON SAID CARTRIDGE WHEN INSERTED INTO SAID CHAMBERS; AND RESILIENT MEANS IN SAID HOUSING FOR POSITIONING A FILM CARTRIDGE WHEN INSERTED INTO SAID CHAMBER, SAID RESILIENT MEANS INCLUDING A MEMBER HAVING AN OPENING REGISTERING WITH SAID WINDOW, SAID CARTRIDGE WHEN INSERTED BEARING AGAINST SAID RESILIENT MEANS AND LIGHT TIGHTLY CLOSING THE RING SPACE OF SAID MEMBER THEREBY RENDERING A PORTION OF THE WALL OF THE CARTRIDGE VISIBLE THROUGH SAID WINDOW WITHOUT PERMITING LIGHT TO ENTER FROM THE WINDOW INTO THE REST OF THE CAMERA HOUSING.
Claim 2
Dependent Claim
124 words
IN A PHOTOGRAPHIC CAMERA HAVING A LIGHT PROOF HOUSING, THERE BEING A CHAMBER IN THE HOUSING FOR RECEIVING A FILM CARTRIDGE, THE IMPROVEMENT COMPRISING: MEANS DEFINING A WINDOW IN SAID CAMERA HOUSING POSITIONED TO REGISTER WITH SAID INDICATING MEANS ON SAID CARTRIDGE WHEN INSERTED INTO SAID CHAMBERS; AND RESILIENT MEANS IN SAID HOUSING FOR POSITIONING A FILM CARTRIDGE WHEN INSERTED INTO SAID CHAMBER, SAID RESILIENT MEANS INCLUDING A MEMBER HAVING AN OPENING REGISTERING WITH SAID WINDOW, SAID CARTRIDGE WHEN INSERTED BEARING AGAINST SAID RESILIENT MEANS AND LIGHT TIGHTLY CLOSING THE RING SPACE OF SAID MEMBER THEREBY RENDERING A PORTION OF THE WALL OF THE CARTRIDGE VISIBLE THROUGH SAID WINDOW WITHOUT PERMITING LIGHT TO ENTER FROM THE WINDOW INTO THE REST OF THE CAMERA HOUSING.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |