US929795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminating system.
Assignee: Carl Zeiss SMT GmbH
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Filing: 1909-04-22
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Granted: 1909-08-03
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Expires: 1929-04-22
Abstract
No abstract record available.
Inventors
- 👤 Henry Siedentopf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:14
CPC Classifications
G; G02; G02B; G02B19/00; G02B19/0004; G02B19/0028; G02B19/0033
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) | 1912-08-02 | 1913-02-01 | 1913-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-08-02 | 1917-02-01 | 1917-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-08-02 | 1921-02-01 | 1921-08-03 | $7700.00 | Window Closed / Lapsed |