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US3514180A
Expired / Lapsed
US
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Device for simultaneously viewing the object and coordinates of the object plane in microscopes and the like
Assignee: Ernst Leitz Wetzlar GmbH
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Filing: 1968-03-07
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Granted: 1970-05-26
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Expires: 1988-03-07
Abstract
No abstract record available.
Inventors
- 👤 Klaus D J Haefner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:15
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US854310A
Cited
CH153231A
Cited
US1974606A
Cited
FR975598A
Cited
US2412017A
Cited
FR969853A
Cited
US2775158A
Cited
US2817994A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |