US2919623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viewfinder for photographic cameras
Assignee: Voigtlander AG
•
Filing: 1956-06-20
•
Granted: 1960-01-05
•
Expires: 1976-06-20
Abstract
No abstract record available.
Inventors
- 👤 Tronnier Albrecht Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:11
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR846959A
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US2346076A
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GB571645A
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AT180816B
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US2616343A
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GB725018A
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US2805608A
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FR1110905A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |