US3463570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide-angle stereoscopic viewer
Assignee: Jetru Inc
•
Filing: 1964-02-10
•
Granted: 1969-08-26
•
Expires: 1984-02-10
Abstract
No abstract record available.
Inventors
- 👤 Harvey L Ratliff Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:59
CPC Classifications
G; G02; G02B; G02B30/00; G02B30/20; G02B30/34; G02B30/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US625627A
Cited
CH83149A
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FR506022A
Cited
US2241041A
Cited
US2189285A
Cited
US2317875A
Cited
US2511334A
Cited
US2955156A
Cited
US3050870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |