US2622478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic objective lens system
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1950-07-20
•
Granted: 1952-12-23
•
Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 Kleineberg Gustav
- 👤 Zimermann Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:08
CPC Classifications
G; G02; G02B; G02B13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE665520C
Cited
FR792770A
Cited
GB427008A
Cited
US2106077A
Cited
US2171641A
Cited
US2319171A
Cited
US2378328A
Cited
US2416032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |