US2719926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for radiographic examination of hollow articles
Assignee: Isotope Products Ltd
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Filing: 1952-08-15
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Granted: 1955-10-04
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Expires: 1972-08-15
Abstract
No abstract record available.
Inventors
- 👤 Charles G Procter
- 👤 Norman Z Alcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:32
CPC Classifications
G; G21; G21F; G21F5/00; G21F5/02; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
RADIOGRAPHY APPARATUS FOR EXAMINING A PIPE WALL, AND COMPRISING IN COMBINATION: A BODY OF GAMMA RAY SHIELDING MATERIAL HAVING AN OPENING THEREIN; A GAMMA RAY EMITTING SOURCE OF THE RADIO-ACTIVE ISOTOPE CLASS SUPPORTED WITHIN SAID BODY; A SHUTTER ELEMENT OF SIMILAR SHIELDING MATERIAL MOUNTED IN SAID BODY AND ADAPTED TO OCCLUDE SAID OPENING AND UPON ACTUATION TO REVEAL THE LATTER TO SAID SOURCE FOR EMISSION OF GAMMA RAYS FROM SAID OPENING; MEANS FOR SUPPORTING A RADIATION SENSITIVE FILM ON AN EXTERIOR SURFACE OF THE PIPE TO BE
Claim 2
Dependent Claim
87 words
RADIOGRAPHY APPARATUS FOR EXAMINING A PIPE WALL, AND COMPRISING IN COMBINATION: A BODY OF GAMMA RAY SHIELDING MATERIAL HAVING AN OPENING THEREIN; A GAMMA RAY EMITTING SOURCE OF THE RADIO-ACTIVE ISOTOPE CLASS SUPPORTED WITHIN SAID BODY; A SHUTTER ELEMENT OF SIMILAR SHIELDING MATERIAL MOUNTED IN SAID BODY AND ADAPTED TO OCCLUDE SAID OPENING AND UPON ACTUATION TO REVEAL THE LATTER TO SAID SOURCE FOR EMISSION OF GAMMA RAYS FROM SAID OPENING; MEANS FOR SUPPORTING A RADIATION SENSITIVE FILM ON AN EXTERIOR SURFACE OF THE PIPE TO BE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-03 | 1959-04-04 | 1959-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-03 | 1963-04-04 | 1963-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-03 | 1967-04-04 | 1967-10-04 | $7700.00 | Window Closed / Lapsed |