US2039355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spectroscopic monochromator
Assignee: Carl Zeiss SMT GmbH
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Filing: 1934-06-29
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Granted: 1936-05-05
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Expires: 1954-06-29
Abstract
No abstract record available.
Inventors
- 👤 Tschermak-Seysenegg Armin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:22
CPC Classifications
G; G01; G01J; G01J3/00; G01J3/12; G01J3/14
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) | 1939-05-05 | 1939-11-04 | 1940-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-05-05 | 1943-11-04 | 1944-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-05-05 | 1947-11-04 | 1948-05-05 | $7700.00 | Window Closed / Lapsed |