US2889744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic viewers
Assignee: Lionel Corp
•
Filing: 1954-10-19
•
Granted: 1959-06-09
•
Expires: 1974-10-19
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Bonanno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:15
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2349013A
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US2484591A
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US2511334A
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US2449483A
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GB651333A
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US2604814A
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US2643577A
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US2649837A
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FR1080979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |