US2729138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and apparatus for projecting three dimensional motion pictures
Assignee: SYNTHETIC VISION Corp
•
Filing: 1951-07-17
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Granted: 1956-01-03
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Expires: 1971-07-17
Abstract
No abstract record available.
Inventors
- 👤 Robert V Bernier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:46
CPC Classifications
G; G03; G03B; G03B35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB224393A
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US1879793A
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US2152959A
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US2145437A
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US2268338A
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US2251177A
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US2270198A
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GB555670A
Cited
GB582773A
Cited
US2415550A
Cited
GB650277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |