US2649023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified gauss-type four-component photographic objective
Assignee: Voigtlander AG
•
Filing: 1950-11-17
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Granted: 1953-08-18
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Expires: 1970-11-17
Abstract
No abstract record available.
Inventors
- 👤 Tronnier Albrecht Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:15
CPC Classifications
G; G02; G02B; G02B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE428657C
Cited
US1899934A
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US1945570A
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DE665520C
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US2164028A
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US2171640A
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US2171641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-17 | 1957-02-16 | 1957-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-17 | 1961-02-16 | 1961-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-17 | 1965-02-16 | 1965-08-18 | $7700.00 | Window Closed / Lapsed |