US2764061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microscope objective
Assignee: Carl Zeiss AG
•
Filing: 1950-07-13
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Granted: 1956-09-25
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Expires: 1970-07-13
Abstract
No abstract record available.
Inventors
- 👤 Kinder Walter
- 👤 Zieher Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:46
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/0025; G02B27/0068; G02B21/00; G02B21/02
Claims Analysis
Total Claims: 0
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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) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |