Patent US2669900A successfully refreshed from Google Patents.
US2669900A
Expired / Lapsed
US
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Optical projection and registration system
Assignee: RCA Corp
•
Filing: 1949-02-01
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Granted: 1954-02-23
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Expires: 1969-02-01
Abstract
No abstract record available.
Inventors
- 👤 William H Cherry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:34
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/74
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |