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Patent US3230422A successfully refreshed from Google Patents.
US3230422A
Expired / Lapsed
US
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Constant intensity sources of monochromatic light
Assignee: Thales SA
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Filing: 1963-07-22
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Granted: 1966-01-18
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Expires: 1983-07-22
Abstract
No abstract record available.
Inventors
- 👤 Gourber Jean-Pierre
- 👤 Bisjak Jacques Francois
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:28
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/24; H05B41/36; H05B41/38; H05B41/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A MONOCHROMATIC SOURCE OF LIGHT COMPRISING: A TUBE ENCLOSING AN IONIZABLE GAS, SAID TUBE HAVING TWO ENDS AND A CENTRAL PORTION; TWO COILS RESPECTIVELY SURROUNDING SAID ENDS AND HAVING RESPECTIVE LOW IMPEDANCE TAPPED PORTIONS; A CAPACITOR BUILDING UP A CIRCUIT IN SERIES WITH SAID TWO COILS; COAXIAL MEANS FOR APPLYING AN ALTERNATING VOLTAGE TO ONE OF SAID PORTIONS; AND MEANS FOR TUNING SAID CIRCUIT TO THE FREQUENCY OF SAID VOLTAGE.
Claim 2
Dependent Claim
70 words
A MONOCHROMATIC SOURCE OF LIGHT COMPRISING: A TUBE ENCLOSING AN IONIZABLE GAS, SAID TUBE HAVING TWO ENDS AND A CENTRAL PORTION; TWO COILS RESPECTIVELY SURROUNDING SAID ENDS AND HAVING RESPECTIVE LOW IMPEDANCE TAPPED PORTIONS; A CAPACITOR BUILDING UP A CIRCUIT IN SERIES WITH SAID TWO COILS; COAXIAL MEANS FOR APPLYING AN ALTERNATING VOLTAGE TO ONE OF SAID PORTIONS; AND MEANS FOR TUNING SAID CIRCUIT TO THE FREQUENCY OF SAID VOLTAGE.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |