US2959088A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Levelling instrument with means for the automatic compensation of small inclinations of the instrument
Assignee: Carl Zeiss Sports Optics GmbH
•
Filing: 1957-10-29
•
Granted: 1960-11-08
•
Expires: 1977-10-29
Abstract
No abstract record available.
Inventors
- 👤 Rantsch Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:43
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B27/646; G02B27/648
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2505819A
Cited
US2679181A
Cited
US2633050A
Cited
US2779231A
Cited
FR1074173A
Cited
US2741940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-08 | 1964-05-09 | 1964-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-08 | 1968-05-09 | 1968-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-08 | 1972-05-09 | 1972-11-08 | $7700.00 | Window Closed / Lapsed |