US2694339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated stereoscopic viewer
Assignee: Individual
•
Filing: 1950-10-09
•
Granted: 1954-11-16
•
Expires: 1970-10-09
Abstract
No abstract record available.
Inventors
- 👤 Edward J Baircuther
- 👤 James M Condran
- 👤 Seton I Rochwite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1989803A
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US1221091A
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US1504989A
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US1516128A
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US1520311A
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US1511791A
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US1850153A
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US1930421A
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US2002602A
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US2118900A
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US2349013A
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US2386255A
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US2484591A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |