US3305746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High intensity atomic spectral lamps
Assignee: Commonwealth Scientific and Industrial Research Organisation
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Filing: 1965-04-27
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Granted: 1967-02-21
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Expires: 1985-04-27
Abstract
No abstract record available.
Inventors
- 👤 Walsh Alan
- 👤 Sullivan John Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:45
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/92; H01J17/00; H01J17/02; H01J17/04; H01J17/06; H01J17/066; H01J17/38; H01J17/40; H01J61/02; H01J61/24; H01J61/28; H01J2893/00; H01J2893/0064; H01J2893/0065; H01J2893/0066; H01J2893/0067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN ATOMIC SPECTRAL LAMP COMPRISING A SEALED ENVELOPE CONTAINING A RARE GAS AT A LOW PRESSURE, FIRST ELECTRODE MEANS LOCATED WITHIN THE ENVELOPE FOR PRODUCING A FIRST ELECTRIC GLOW DISCHARGE WHICH GIVES RISE TO AN ATOMIC VAPOR BY CATHODIC SPUTTERING, SECOND ELECTRODE MEANS FOR PRODUCING A SECOND ELECTRIC GLOW DISCHARGE, SAID SECOND SET OF ELECTRODES BEING SO ARRANGED WITHIN THE ENVELOPE THAT SAID SECOND DISCHARGE PASSES THROUGH SAID ATOMIC VAPOR THEREBY TO PRODUCE EXCITATION OF THE ATOMS IN SAID VAPOR GIVING RISE TO ENHANCED EMISSION OF ATOMIC SPECTRAL RADIATION FROM SAID ATOMS, AND A TRANSPARENT VIEWING WINDOW IN THE ENVELOPE THROUGH WHICH THE PHENOMENA INSIDE THE ENVELOPE MAY BE OBSERVED.
Claim 2
Dependent Claim
110 words
AN ATOMIC SPECTRAL LAMP COMPRISING A SEALED ENVELOPE CONTAINING A RARE GAS AT A LOW PRESSURE, FIRST ELECTRODE MEANS LOCATED WITHIN THE ENVELOPE FOR PRODUCING A FIRST ELECTRIC GLOW DISCHARGE WHICH GIVES RISE TO AN ATOMIC VAPOR BY CATHODIC SPUTTERING, SECOND ELECTRODE MEANS FOR PRODUCING A SECOND ELECTRIC GLOW DISCHARGE, SAID SECOND SET OF ELECTRODES BEING SO ARRANGED WITHIN THE ENVELOPE THAT SAID SECOND DISCHARGE PASSES THROUGH SAID ATOMIC VAPOR THEREBY TO PRODUCE EXCITATION OF THE ATOMS IN SAID VAPOR GIVING RISE TO ENHANCED EMISSION OF ATOMIC SPECTRAL RADIATION FROM SAID ATOMS, AND A TRANSPARENT VIEWING WINDOW IN THE ENVELOPE THROUGH WHICH THE PHENOMENA INSIDE THE ENVELOPE MAY BE OBSERVED.
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) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |