US2476898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Schmidt-type image projection apparatus
Assignee: RCA Corp
•
Filing: 1944-11-28
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Granted: 1949-07-19
•
Expires: 1964-11-28
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Nicoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
G; G02; G02B; G02B17/00; G02B17/08; G02B17/0884; G02B17/0888; G02B17/0804; G02B17/0808; G02B7/00; G02B7/02; G02B7/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2309788A
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US2295802A
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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) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |