US3248543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray spectrographic apparatus having a pair of X-ray tubes with different emission properties
Assignee: Individual
•
Filing: 1963-04-18
•
Granted: 1966-04-26
•
Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Pitchford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:19
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/22; G01N23/223; G01N2223/00; G01N2223/07; G01N2223/076
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
IN X-RAY SPECTROGRAPHIC APPARATUS, THE COMBINATION COMPRISING A PAIR OF SEPARATE GENERALLY TUBULAR X-RAY TUBES, ONE OF SAID X-RAY TUBES HAVING A HEAD PORTION INCORPORATING MEANS FOR EMITTING RELATIVELY SOFT X-RADIATION AND THE OTHER OF SAID X-RAY TUBES HAVING A HEAD PORTION INCORPORATING MEANS FOR EMITTING RELATIVELY HARD X-RADITION, AND CARRIAGE MEANS SUPPORTING SAID PAIR OF TUBULAR X-RAY TUBES IN SUBSTANTIALLY COAXIAL HEAD PORTION-TO-HEAD PORTION ABUTTING RELATIONSHIP FOR MOVEMENT ALONG THE AXES OF THE TUBES, WHEREBY THE X-RADIATION EMITTING MEANS IN A SELECTED ONE OF SAID TUBES MAY BE MOVED INTO RADIATING RELATION WITH A SPECIMEN TO BE ANALYZED.
Claim 2
Dependent Claim
99 words
IN X-RAY SPECTROGRAPHIC APPARATUS, THE COMBINATION COMPRISING A PAIR OF SEPARATE GENERALLY TUBULAR X-RAY TUBES, ONE OF SAID X-RAY TUBES HAVING A HEAD PORTION INCORPORATING MEANS FOR EMITTING RELATIVELY SOFT X-RADIATION AND THE OTHER OF SAID X-RAY TUBES HAVING A HEAD PORTION INCORPORATING MEANS FOR EMITTING RELATIVELY HARD X-RADITION, AND CARRIAGE MEANS SUPPORTING SAID PAIR OF TUBULAR X-RAY TUBES IN SUBSTANTIALLY COAXIAL HEAD PORTION-TO-HEAD PORTION ABUTTING RELATIONSHIP FOR MOVEMENT ALONG THE AXES OF THE TUBES, WHEREBY THE X-RADIATION EMITTING MEANS IN A SELECTED ONE OF SAID TUBES MAY BE MOVED INTO RADIATING RELATION WITH A SPECIMEN TO BE ANALYZED.
References Cited (Backward Citations)
CH63432A
Cited
US2884538A
Cited
US2884535A
Cited
US2884539A
Cited
GB858416A
Cited
GB858417A
Cited
US2948822A
Cited
US3114832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |