US2553171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for viewing stereoscopic motion pictures
Assignee: Individual
•
Filing: 1947-10-14
•
Granted: 1951-05-15
•
Expires: 1967-10-14
Abstract
No abstract record available.
Inventors
- 👤 Campos Aluizio Fragoso De Lima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:43
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US660006A
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US830217A
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US1259775A
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US1189308A
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GB152367A
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CH91584A
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GB178344A
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FR562217A
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FR559378A
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US1596835A
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GB466047A
Cited
US2273512A
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US2365212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |