US2901627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for the electronic magnification of objects
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1954-02-17
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Granted: 1959-08-25
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Expires: 1974-02-17
Abstract
No abstract record available.
Inventors
- 👤 Wiskott Detmar
- 👤 Bartz Gunter
- 👤 Weissenberg Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
H; H01; H01J; H01J37/00; H01J37/26; H01J37/29
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2241432A
Cited
US2330930A
Cited
US2372422A
Cited
US2450602A
Cited
FR1064426A
Cited
US2799799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |