US2844990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing color effects in projected pictures
Assignee: Individual
•
Filing: 1954-11-09
•
Granted: 1958-07-29
•
Expires: 1974-11-09
Abstract
No abstract record available.
Inventors
- 👤 Nagler Josef
- 👤 Jr Josef Nagler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:27
CPC Classifications
H; H04; H04N; H04N11/00; G; G02; G02B; G02B27/00; G02B27/02; G02B27/06; G03; G03B; G03B33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1322794A
Cited
US1937823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |