US2443258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical signaling system, including means for dispersing and recombining a light beam
Assignee: RCA Corp
•
Filing: 1942-04-30
•
Granted: 1948-06-15
•
Expires: 1962-04-30
Abstract
No abstract record available.
Inventors
- 👤 Nils E Lindenblad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/24; G02B6/26; G02B6/28; G02B6/293; G02B6/29371; G02B6/29373; G02B27/00; G02B27/10; G02B27/1006; G02B27/12; G02B27/123; G02B27/126
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1204771A
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GB129747A
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US1462348A
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FR672692A
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FR684995A
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US1968977A
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US2010307A
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US1981999A
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US2078768A
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US2206521A
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US2193606A
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US2222937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-15 | 1951-12-15 | 1952-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-15 | 1955-12-15 | 1956-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-15 | 1959-12-15 | 1960-06-15 | $7700.00 | Window Closed / Lapsed |