Patent US3674339A successfully refreshed from Google Patents.
US3674339A
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US
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Stereoscopic photograph system using a stereoscopic attachment to a camera
Assignee: Canon Inc
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Filing: 1970-09-16
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Granted: 1972-07-04
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Expires: 1990-09-16
Abstract
Abstract IN THE DISCLOSED SYSTEM FOR TAKING STEREOSCOPIC PHOTOGRAPHS, A PLURALITY OF PRISMS ARE FORMED FROM A SINGLE SHEET AND ARRANGED WITHIN THE FIELD OF A SINGLE OBJECTIVE ON A CAMERA. EACH PRISM MAKES A SEPARATE IMAGE ON A DIFFERENT PORTION OF THE FILM. THE PRISMS ARE ARRANGED TO DISTRIBUTE THE IMAGES THROUGHOUT THE FILM.
Inventors
- 👤 Kazuo Sayanagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:59
CPC Classifications
G; G03; G03B; G03B35/00; G03B35/08; G03B35/10; G02; G02B; G02B30/00; G02B30/20; G02B30/34; G02B30/36; H; H04; H04N; H04N13/00; H04N13/20; H04N13/204; H04N13/207; H04N13/218
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |