US3818220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable depth laminagraphy
Assignee: Individual
•
Filing: 1971-11-03
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Granted: 1974-06-18
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Expires: 1991-11-03
Abstract
Abstract A METHOD AND APPARATUS FOR OBTAINING LAMINAL DETAIL WITHIN A THREE-DIMENSIONAL OBJECT UTILIZING CIRCULAR LAMINAGRAPHY, THAT IS, A SERIES OF EXPOSURES TO PENETRATING RAYS RECORDED SERIATIM ON DISCRETE FILMS AS A RAY-SOURCE AND OBJECT ARE RELATIVELY MOVED CIRCULARLY IN REFERENCE TO THE FILM. THE APPARATUS MOUNTS THE FILM AND OBJECT FOR RECORDING, AND MOUNTS THE RESPECTIVE RECORDED DATA AND MOVES EACH SUITABLY WITH RESPECT TO THE OTHER TO GENERATE A SERIES OF LAMINAL DETAIL PROGRESSIVELY THROUGH THE OBJECT.
Inventors
- 👤 A Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:35
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/025; G; G01; G01N; G01N23/00; G01N23/02; G01N23/04; G01N23/043; G01N23/044; G03; G03B; G03B42/00; G03B42/02; G03B42/026
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) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |