US1940401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shell cupola
Assignee: Carl Zeiss SMT GmbH
•
Filing: 1932-03-17
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Granted: 1933-12-19
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Expires: 1952-03-17
Abstract
No abstract record available.
Inventors
- 👤 Dischinger Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:32
CPC Classifications
E; E04; E04B; E04B7/00; E04B7/08; E04B7/10; E04B7/102; E04B1/00; E04B2001/0053; E04B2001/0084; E04B2001/0092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-12-18 | 1937-06-19 | 1937-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-12-18 | 1941-06-19 | 1941-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-12-18 | 1945-06-19 | 1945-12-19 | $7700.00 | Window Closed / Lapsed |