US2295779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection apparatus
Assignee: RCA Corp
•
Filing: 1940-08-17
•
Granted: 1942-09-15
•
Expires: 1960-08-17
Abstract
No abstract record available.
Inventors
- 👤 David W Epstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:22
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0884; G02B17/0888; G02B17/0804; G02B17/0808; G02B17/0896; G02B27/00; G02B27/0018; H; H04; H04N; H04N9/00; H04N9/12; H04N9/16; H04N9/18
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) | 1945-09-14 | 1946-03-16 | 1946-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-14 | 1950-03-16 | 1950-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-14 | 1954-03-16 | 1954-09-15 | $7700.00 | Window Closed / Lapsed |