US2845842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphotographic apparatus
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1956-11-30
•
Granted: 1958-08-05
•
Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Leitz Ludwig
- 👤 Frischman Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:36
CPC Classifications
G; G02; G02B; G02B21/00; G02B21/36; G02B21/362
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |