US1996054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection lens system
Assignee: TRANS LUX DAYLLGHT PICTURE SCR
•
Filing: 1933-08-19
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Granted: 1935-04-02
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Expires: 1953-08-19
Abstract
No abstract record available.
Inventors
- 👤 Lester W Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:49
CPC Classifications
G; G02; G02B; G02B1/00
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) | 1938-04-01 | 1938-10-01 | 1939-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-01 | 1942-10-01 | 1943-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-01 | 1946-10-01 | 1947-04-02 | $7700.00 | Window Closed / Lapsed |