US2590260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereoscopic film viewer
Assignee: TRU VUE Co
•
Filing: 1948-08-24
•
Granted: 1952-03-25
•
Expires: 1968-08-24
Abstract
No abstract record available.
Inventors
- 👤 Gifford M Mast
- 👤 Wright K Gannett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:39
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/08; G03B23/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1065133A
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US1499941A
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US1796432A
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US1862364A
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US1957904A
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US2003480A
Cited
GB417364A
Cited
US2122649A
Cited
GB525110A
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US2326718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |