US2778288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic camera
Assignee: Individual
•
Filing: 1952-12-16
•
Granted: 1957-01-22
•
Expires: 1972-12-16
Abstract
No abstract record available.
Inventors
- 👤 Arnold M Steffen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 00:20
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/08; G03B35/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2298586A
Cited
US1351508A
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US1513984A
Cited
US1589754A
Cited
US1744459A
Cited
US2283466A
Cited
US2385804A
Cited
US2517246A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |