US2729036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine tools
Assignee: Ernst Leitz Wetzlar GmbH
•
Filing: 1952-04-08
•
Granted: 1956-01-03
•
Expires: 1972-04-08
Abstract
No abstract record available.
Inventors
- 👤 Franke Georg
- 👤 Malfeld Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:11
CPC Classifications
B; B24; B24B; B24B49/00; B24B49/12; G; G02; G02B; G02B21/00; G02B21/0004; G02B21/0016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB478755A
Cited
US2130710A
Cited
US2203389A
Cited
GB553594A
Cited
US2404770A
Cited
US2614368A
Cited
US2552238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |